check my spec

[daniel_bourton]

i am about to buy a new computer for about 900 pounds general use and moderate gaming
i already have a decent 850watt modualr psu that cost me a bomb

G.Skill Ripjaw 4GB (2x2GB) DDR3 PC3-12800C7 1600MHz Dual Channel Kit (F3-12800CL7D-4GBRH)
£73.99 inc VAT

Samsung SM2333SW 23" Widescreen LCD Monitor x2
£159.99 inc VAT

Lancool Dragon-Lord PC-K58 Mid Tower Case
£57.49 (from competitor)

Samsung Spin Point F3 SATAII NCQ 500GB 16Mb Cache x2
£38.69 (from competitor)

core i5 750 retail
£150 (from competitor)

evga 1156 p55 ***
£160.99 (from competior)

sata dvd-rw
£15 (from competitor)

only a few questions will it all go together?
is there anything i could improve for not much more cost?
is the motherboard worht the extra over the normal evga 1156 mobo?
and is it worth getting 1 1tb hard drive or 2 500gb in raid 0?
also i am thinking about getting a 5870 but waiting for the prices to go down a bit first i have a card lying around i can use for now
also at some point i will oc it but atm there isnt any decent i5 coolers so i gona wait till one unless you no a good one?