What's the proposed use ?
Don't see any RAM ?
Would the 650TX work for you or do you really want the modular ? More $$ for modular.
Re CPU cooling.....I'd head over to FrostyTech.com and see what they show for the various coolers. Bottomline there are better CPU coolers to be had for about the same money.
Am thinking of building a sandy bridge desktop as its been almost 5 years since ive bought a new desktop.