hello everyone, im planning to upgrade my current pc and didnt push thru last time

here's my current rig

intel c2d e6600
abit ip35-pro
2x2gb team extreem dark 1066
2x1TB samsung hard drive
1x320GB seagate dard drive
msi 8800gtx oc edition
silverstone DA750

ive ordered a q9450 its arriving tomorrow and my question is
i wanted to have quad sli and i dont knw what motherboard would be better i want something not so expensive and would let me do quad sli on 2 9800gx2 and would a the silverstone da750 do the job on 2 9800gx2? and i plan 2 get another 2x2GB team extreem dark 1066 or should i change it also with the new board? i wanted to try out ddr3 but last i check it was still to expensive and hard to come by here were i live, if thier a good motherboard ddr3 and a ddr3 thats not expensive can you guys tell me which brand model?
i was just thinking about a small upgrade i have the q9450 and was planning on a 9800gx2 and maybe later on adding another 9800gx2, what your though on this?

i wanted to know whats your advise on the following

Proc: core2quad Q9450
Mobo: need a bang for the buck board
Mems: is the teem dark 1066 ok or should i just change?
Video: (9800gx2 any suggestions?)
Power: silverstone DA750

havng a hard time deciding need you advice thanks!

If your current MB supports the Q9450, why not just keep that and upgrade to SLI when you need it? The P35 chipset is a very decent one and won't hold you back with a Q9450 unless you were planning on extreme overclocking. If you have no issues with your RAM, don't bother change it, there is little performance to be gained from switching to something else. As for the 9800GX2, I suggest waiting until ATI releases it's new cards, if only for the possible price drops. For the PSU, I have no idea, but, like the MB, upgrade only when you will get the second 9800GX2; if you never get a second card for whatever reason, then no money wasted .

You need a power supply around 1000W for 2 9800GX2:

Certified SLI-Ready Power Supplies

http://www.slizone.com/object/slizone_build_psu.html

ok thanks for the info