Managed to make top 4 with this deck on the first ever premier event last Sunday on MTGO, which made me really happy! I haven’t played vintage in a long time. I own the cards IRL but there doesn't seem to be a vintage scene here in Seattle (?) and I can't travel to other states to play. 
I based my list on Smmenen's list for NYSE II, Lands and SB is very much identical, I made a couple of changes main deck, why I made those changes are explained below. I did a lot of play testing over the week to get me familiarized on how to properly play a Gush deck.
A brief tournament report based on my memory (which isn't that good now-a-days =P).
URg Delver
Planeswalker (1)
1 Dack Fayden
Creature (12)
4 Delver of Secrets
4 Young Pyromancer
2 Snapcaster Mage
2 Trygon Predator
Sorcery (6)
1 Ponder
4 Preordain
1 Time Walk
Instant (24)
4 Force of Will
2 Flusterstorm
4 Mental Misstep
2 Spell Pierce
1 Ancestral Recall
1 Brainstorm
4 Gush
4 Lightning Bolt
1 Nature's Claim
1 Ancient Grudge
Artifact (3)
1 Mox Ruby
1 Mox Sapphire
1 Skullclamp
Land (14)
2 Island
2 Tropical Island
3 Volcanic Island
3 Misty Rainforest
4 Scalding Tarn
Sideboard (15)
1 Dack Fayden
3 Grafdigger's Cage
4 Ingot Chewer
4 Leyline of the Void
1 Mountain
2 Pyroblast
Notable changes in the deck
Dack Fayden + 1 Main + 1 SB: 
Dack has been amazing in testing. Next to drawing cards for 1 mana with skullclamp, nothing makes me happier that gushing then dumping extra lands via Dack. His -2 is only a bonus. I have been able to reach ultimate range with him, but never felt the need to activate it. 1 in the sideboard was mainly for shops.
1 Skullclamp:
Skullclamp, like Dack, is only there for the incidental value. For both cards - I felt that I drew them exactly when I needed them and they never felt dead. I fear that increasing the count of both Dack and Skullclamp to more than 1 in the main wouldn't be worth it. 
0 Misdirection:
I would have probably played 1 - but I could never justify paying 80$ for it, so I added a full set of bolt. I would probably test out a Mindbreak Trap in its place.
0 Black Lotus:
Budget mainly - I allotted a certain amount for MTGO this month and felt that 2 moxen, + AR and Time Walk was a better investment for URg Delver. Would probably get one for the next event
0 Mystical: 
Would probably pick up one for the next event, the deck has been good at giving me the cards that I need, thanks to the cantrips and I couldn't find through the bots.
0 Fire // Ice:
This would be stellar with a Dack Emblem, but surprisingly it was a little hard to look for - turned out they had gazillions in mtgotraders. Would probably add 1 in the main.
LordSapphire with LandStill, 2 - 0:
1 - Can't remember much but I had a couple of misplay on this one, I often misplay ponder and brainstorm, ending up putting the cards I need the most on the bottom. I accidentally put my force on the bottom of my BS pile and he resolved a standstill. I broke it and drew him 3 cards. I was able to win through delver and Pyromancer beats
2 - He started of a library and I cantrip go. Played a play a pyromancer t2 and we had a counter exchange afterwards. He couldn't find an answer in time.
G0ogle  with Landstill, 1 - 2:
1 - He was able to resolve as standstill 3 times in G2, I couldn't recover.
2 - Made a misplay on g3 that caused me the game - I made the decision to use my spell pierce to counter his drain keeping, my pyroblast for something else. On his next turn he played a crucible and I got locked out of the game.
sylverfyre with Affinity(?), 2 - 0
1 - He started with 2 1/1 lifelink, fliers. I was able to draw an ancient grudge and destroyed his threats while resolving a Trygon Predator, he scooped.
2 - He was able to get a clamp into play eating a memnite and a signal pest. I had a delver and young pyromancer. Ancient tomb eats his life with the help of some swings from delver. Drew a bolt when he was down to 2
powergamer1003 with UBW Control, 2 - 0
1 - I resolved a skullclamp with pyromancer in play. 
2 - I went for a t1 delver which got countered. He played a confidant which I tried to counter, he had a force and it resolves. I drew a land on my next turn and used the red mana for a bolt. I managed to play a Trygon, then a Dack, while he had a trinket and a top. I activated Dack dumping a Pyroblast and a land, I was debating that spell pierce would be the better counter since he only had 3 mana sources and he would be using 1 of that to activate top. He did just that and tried to play AR, I spell pierced. On my turn I Gushed, then dumped extra lands using Dack. On the same turn I played Snapcaster - he scooped.
TheLastKing with BUG with Truename, 2 - 1
1 & 2 - Can't remember much but one thing I know is that True Name is a pain in the @$$.
3 - I was able to race 2 TNN with a delver and predator. I had to bolt him once and use nature's claim on my mox to survive, the game ended with me at 1 life with force of will in hand.
JDPheonix with Dredge! 2 - 0
1 - I was able to generate 8 elemental tokens with two Pyromancers, and had a Snapcaster and a Delver! I did not expect to win vs dredge on game 1 with the hand that I kept.
2 - I mulled to 5 with Grafdigger and some protection. I manage to land a single delver and protect the cage for the win.
TOP 8
aaronmm67 with Grixis control, 2-0
1 - Won from Pyromancer beats.
2 - Won on the back of multiple delvers.
KowalLazy with Manly Slaver!
3 - Got really greedy with my last round -  I had Force, Ancestral and Dack Fayden in play, I let tinker resolve thinking that whatever he's tinkering for I can just steal, forgot he had he had Slaver (duh! he even had drain mana). On my turn he drew bunch of cards with my AR and filtered his hand with my Dack. There was still hope for me, as he only had a few artifacts in play. But between AR, a bunch of Dack Fayden activations - he found his Yawgmoth's Will, and I got mind controlled me to death.
The deck played very smoothly for me. I made a couple of misplays but I didn't get really punished for it. There are a couple of things that I would change in the next tournament. I would probably move the Leylines out of the board and go with a full set of cage, I would probably add 1 more ancient grudge and reduce the mental missteps to 3, and try to make space for a lotus and a mystical tutor. I would keep the lightning bolts as a 4-off as I feel that they are very strong in the online metagame.
I love how I was able to play vintage and be silly with my daughter in between rounds. MTGO is great for Dads like myself