Need feedback on build and what memory to buy

Its been about 4-5 years since I built my last computer (gpu is an asus FX5950... so old lol) so im a little out of the loop now with compatible hardware, been through alot of reviews and im almost decided on which parts im getting. Any feedback on the parts selected would be very helpful, also a little unsure of which memory to buy. Price isnt a concern, so any suggestions on that would also be great.

CPU - Intel Core 2 Quad Q9450
CPU cooling - Noctua NH-U12P
Motherboard - Asus Striker II Extreme
Memory - Unsure what will be best with CPU/Motherboard *need help here*
Graphics Card - 1GB EVGA 9800 GX2 SSC <---Will probably get a second one at a later date
Powersupply - 1000W Zalman ZM1000-HP

Possibly going to use a Raptor 150gb harddrive to install windows etc on. read some reviews saying the speed really doesnt make much difference at all.

Again any help would be great.

 

There is another thread about a $3000-ish computer build on the forums. There is some great advice in there but Ill echo some of their comments. That chip has a FSB wall of like 475 or something (or its an OC wall of 3.6ghz) which will limit your oc. I like your cooling but the Xigmatek S1283 HDT is better in my opinion. If that board is the X48 chipsets GSKill has some DDR3 kits out (2x1GB) for like 180.00 bucks with Micron D9GHTs in them (extremely good oc). That mobo is expensive though. Id say wait for Nehalem if you are wanting to go intel. Otherwise an E8400 or something would be better than that quad. Search for the thread though, alot of interesting and useful info on there.