There's a lot of colorless mana in your casting costs, so i don't see why a sol ring would be bad. I like the lorescales, but am hard pressed to see why the tinker/blightsteel plan isn't just better. It is WAY less slots and a 1 card combo. Plus it has that "oops, I win" factor of turn 1 tinker with force backup. If you cut the lorescales, libraries, and cobras, you add about 8 slots for 4 disruption (mana drains!!!) and tinker, BSC, sol ring, mana crypt. I know that makes it more like smemenemenemen's deck, but BSC is just the 800 pound gorilla in the room, and NOT using him in a heavy counter/draw shell is just silly.
I like people playing "fun" decks, but if you are asking on ways to make the deck more competitive, I'd start there.
I admit the BSC/tink is a great idea but I'm trying to build a deck without it - there are already a number of finely tuned options out there using that plan. If possible Id like to move this deck towards competitive rather than fun - I'll see what I can do about the Sol Ring.
With only 21 mana sources, lots of drawing and quite high CC cards like Gush, confidants could be less effective. What about adding +1 tinker, +1 bsc, +1 sol ring instead 3 confidants?
I don't think I'll ever be casting Gush with mana - The plan is to abuse the gush/cobra synergy as much as possible. I agree that confidants may not be the best fit for this deck simply because the deck wants island, swamp and forest on the first turn as is. Confidant needs to be played early to be effective.