Mining Rig- n00b question

[aceman1011]

Alright, since I'm building a new rig and since I always see people making huge mistakes, I wanted to run my specs by the gurus  

GPU (x2):
http://www.newegg.com/Product/Product.aspx?Item=N82E16814102878&cm_re=radeon_hd_5830-_-14-102-878-_-Product
Motherboard:
http://www.newegg.com/Product/Product.aspx?Item=N82E16813130290
PSU:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817339024
RAM (x2):
http://www.newegg.com/Product/Product.aspx?Item=N82E16820231395
CPU:
http://www.newegg.com/Product/Product.aspx?Item=N82E16819103698
Fans:
http://www.newegg.com/Product/Product.aspx?Item=N82E16835103087


Will both GPUs fit on that motherboard? And is that PSU powerful enough to power both cards at the same time? Thanks guys!

PS: I already have the fans and cases. Do I really need a CPU cooler, and does 4 GB of RAM make sense?

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[psknives]

Not too sure about that PSU, and why not get a 3 slot mobo so in the future you can hook up another GPU?

Good luck.

[aceman1011]

In that case, I would need a MUCH bigger PSU. Does it make sense to just go with a huge PSU from the start? This was meant to be an economical build, and adding another PSU and getting a 3 card motherboard would ramp the price up. But anyways, what motherboards would you recommend?
New PSU pick: http://www.newegg.com/Product/Product.aspx?Item=N82E16817152036
I know people hate Raidmax, but i haven't had any bad experiences with them yet.

On the Wiki page, they use one 600W PSU for the 2 card build, and if I want to upgrade to 3, I could just add the 450W "modular juice box." That would be a lot cheaper, so that will be the way I go, but with a more powerful starting PSU.
Link: https://en.bitcoin.it/wiki/Mining_rig