I am far from a fan of a 5970. It performs like the cheaper and cooler 5850 crossfire. It performs far worse than the few degrees hotter and similarly priced 470gtx sli. IMO it's really a bad buy. Also fermi can withstand far higher temps than ati so heat really isn't an issue.
I'd opt for a 480gtx, 470gtx sli or 5850 CF.
As for the screen I'd get a bigger one 24inch seems optimal
and you need tripple channel memory for a 930 so 6gb.
The stock fan is good enough for stock clocks again lol. But it is pretty loud so it that concerns you then you should maybe get an aftermarket cooler.
I'm not a fan of the case it's very good quality for the price but IMO it's darn ugly inside and outside.
Also I don't really like the mobo it's good quality. But IMO I would get the ga x58a-ud5(I own and love it). I've always prefered gigabyte. And if OCing isn't on your mind then a ga-x58a-ud3r will do fine aswell. And as for the psu 850w is cutting it close for sli. I'd get the 950tx or the modular and more efficient 1000hx.
If you do decide to overclock in the future there si this new nanogrease thermal paste on the market. Its meant to have better conducting capacity and thereofree may prolong a components lifespan. Just something to think about.