Yeah it's definitely possible to do Inferno through sheer force of will as a wizard without using the auction house or grinding forever for gear-- I'm doing the same thing myself and am up to Belial-- who I've come close to getting past a few times. Figure if I mash my head against him for a few hours I can win that fight. Mostly cause Venom Hydra and Force Armor are both broken and can do most of the work for offense and defense for you, and wormhole teleport can get you past any trouble packs. Kinda skeptical any other class (including DH-- lacking the ability to not get ohkoed by everything via force armor seems like it'd be problematic) can do it though. Course once they smooth out the difficulty that might not be the case anymore.
--
No problem!
This is a cute and pop genocide of love!