I differ from you wrt the power supply, I think CoolerMaster makes excellent power supplies - in fact, I've been running the 450W RealPower PSU in my rig and it's rock-solid. Also have a look at that link that I posted for it, the specs of that power supply is pretty impressive and the reviews & awards just as good.
Trust me you don't want to take a chance with cooler master. I've used so many high end power supplies and I can tell you that with all that hardware you don't want to take a chance. I have with me an Enermax Galaxy 850Watt, have had the 1KW, tested and benched on Aopen/Fotran 700Watt unit, Antec 600Watt, Enermax Noisetaker 600watt and numerous other units and I can tell you the Enermax (and PC Power units) is by far the best.
Not talking about reviews but stuff I've tested personally with the best hardware money can buy.
As for motherboards, Asus haven't had the fastest motherboard since.... forever. Right now the Asus Striker Extreme is the worst NF6 board out there, giving the lowest overclocks out of every other NF6 based motherboard.
And I'm not just riding on the Striker, right now I have the fastest PC in the country and it was powered by the ASUS Striker Extreme, but if I had the Abit IN9-MAX or the DFI Lanparty the scores would be much better.
Right now I also have 3 Asus motherboads with me, the P5N-32SLI Deluxe, the P5B-E Plus (Green), the Striker and for comparison also the Intel BadAxe2 and Abit AW9D-MAX. Trust me the Abit is superior by a large margin clock for clock.
@ 4.4GHz on the X6800 I could only get 202,000 on the Asus, moved to the Abit and recorded 211K in Aquamark3

(Granted not exact clock speed, but Striker couldn't make the speed anyway)
As for Memory Corsair is good, but the brand will do nothing for you if the sticks aren't using good chips. Since nobody other than Hynix, Elpida, Infinion, Samsung and Winbond make they're own ram the chips used are more important than the brand on the stick. OCZ VX and XTC line for DDR2 is very good, Same goes for the Team Group, G.Skill and Crucial stuff.
Don't let the brand misguide you, the brand does not make the product, but the actual silicon and for the amount of money you willing to throw down, that's where you should be looking. Anandtech if fine and the like, but they not going to push the ram to it's limits like on XS, VR-Zone and the like.