I know Fortron makes quality PSUs, but for all that stuff you're putting in there I wouldn't want anything less than 500W to be safe. It seems you want to stay on the cheap side for the PSU, which I wouldnt really suggest, but I can recommend this:
http://www.newegg.com/Product/Product.asp?Item=N82E16817103931
these are great PSUs for the price and I used to own one before getting what i got below as a gift. Seeing that you will be only running one vid card, this psu should be more than enough.
Your cpu is a great choice btw, well anything from a 3000+ and up would be pretty good
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AMD X2 4400+ Toledo
XFX and LeadTek GeForce 7800 GTX 450/1250 in SLi
DFI Lanparty nF4 SLi-DR (704-2bta BIOS)
2X1GB OCZ Platinum DDR Ram (2-3-2-5)
Hitachi Deskstar SATAII HD 250 GB
OCZ PowerStream 600W SLi-Ready Version
NZXT Guardian Case
Creative Sound Blaster Audigy2 ZS
Creative Inspire P7800 7.1 Surround System
Samsung 204b Black 20.1" LCD (1600x1200)