Confused onto which PSU to buy please help!!

Hi everybody, recently I just got my Arctic power 700watt PSU from ebuyer

http://www.ebuyer.com/product/124927

it looked really attractive when I was buying it and it was at a good price range as well.

However when I was building my computer I found out it only had 1x PCI express connector when my GPU needed 2. The website also says it comes with 6x 4pin molex connectors, however it only came with 3 which is a shame as if I use the PCIexpress adapters which came with the GPU vender it takes up 4 molex connections and then there is nothing left for the fan, optical drive etc.

I also wanted to ask if anybody could recommend me a good PSU my budget = 65 pounds MAX.

I have looked at and researched some PSU which I think are good.

Antec EarthWatts 650W PSU : http://www.ebuyer.com/product/141006
OCZ Stealth XStream 600W PSU : http://www.ebuyer.com/product/127861

What I am worried about is if I buy one of these 2 PSU preferabaly the OCZ one as it has sleved cables and its cheaper will it be enough to power my build. My hardware is:

ASUS P5QL/EPU iP43 Socket 775 8 Channel Audio ATX Motherboard
Intel Core 2 Quad Q9400 Socket 775 2.66GHz 1333FSB 6MB Cache
Kingston 4GB (2x2GB) DDR2 1066MHz/PC2-8500 HyperX Memory CL5 2.2V
Samsung EcoGreen F2 1TB Hard Drive SATAII 32MB Cache - OEM
Gigabyte GeForce GTX 260 896MB ( 216 core )

PLEASE HELP ME OUT!! I need to send back hdd anyway as I have ordered the wrong one its 5400 rpm instead of 7200 rpm