[Deck help] A little help with 5-proxy Workshop Slavery?

I've recently started playing Type 1 and built a good WelderMUD deck, sans power (but with Workshops.) Lately, it seems that Slavery has become a little better than MUD, so I decided to try it, with one problem. It runs all 9 power cards. I decided to thin down the power to 5 of what seemed to be the most important cards, but I'd like to see what another's opinion is.

The Decklist: (Credit should go to Toad for this build)

Lands -- 16
1 Tolarian Academy
3 Ancient Tomb
4 Mishras Workshop
4 Volcanic Island
4 Shivan Reef

Mana Artifacts -- 11
1 Lotus Petal
1 Mox Sapphire
1 Mox Jet
1 Mox Ruby
1 Sol Ring
1 Black Lotus
1 Mana Vault
1 Mana Crypt
3 Gilded Lotus

Control Elements -- 15
2 Cunning Wish
2 Fire/Ice
4 Mindslaver
4 Force of Will
4 Chalice of the Void

Draw Engine -- 11
1 Ancestral Recall
1 Wheel of Fortune
3 Minds Eye
1 Tinker
1 Memory Jar
4 Thirst for Knowledge

Dudes -- 6
1 Platinum Angel
1 Pentavus
4 Goblin Welder

Sideboard -- 15
1 Shattering Pulse
1 Mystical Tutor
1 Stroke of Genius
1 Capsize
2 Fire/Ice
2 Rack and Ruin
3 Tormods Crypt
4 Red Elemental Blast

Card choices:

The Power: I figured it would be good to keep as much artifact mana as possible. Thus, Emerald and Pearl got the boot for Black Lotus. This opened up another proxy slot, which Recall seemed to fill nicely, fetching the combo faster.

Lotus Petal: I still needed another piece of mana acceleration, and Lotus Petal seemed decent enough to fill the place of a mox.

Platinum Angel: Karn didn't seem like the best win condition if I can't combo out fast enough against combo. A quick Tinker or otherwise accelerated Angel can win those games.

4 Mindslaver: Honestly, I don't know how many I should play. I'm only running two draw-7s, so 4 gives a greater chance to draw one, but if I do go down to 3, I'm not sure what to put in its place (FoF comes to mind.)

Other than these points, the build is pretty standard. Thank you for all your help and thoughts. Overall, Type 1 is proving to be a very diverse and interesting format to play in, and I'm glad I decided to get into it.