Video card a good choice ?
Crossfire capable worth the extra cash ?
worth getting the 650w psupply over the 500w earthwatts ?
E5200 over the E7 ?
really I didn't want to spend more then $600, but I wanted it to have upgrade options in the future w/ the 650w pssuply and ud3p (crossfire).. new to all this so any advice on anything would be great. thanks alot !!
More about :650 custom gaming build advice ordering
The 650 W is probably over killed for that rig but it will allow you to go crossfire if you ever want to.
HD 4850 is a pretty good GPU but matters depend on the seize of your screen and the resolution you play your game at. If you're going for a 22'' 1600x1050 you should be good to go. Also look at other manufacturers for you GPU, HIS for example, they make the HD 4850 with a better cooling solution. Also, Sapphire has a pretty crappy customer service.
HHD get the same one but in the black edition. It's faster and shouldn't be much more expensive
As for your CPU, I'd say if you can get into the 7xxx serie well that's even better if budget doesn't allow than stick with the 5200. I'd suggest getting and after market cooler something like the Xigmatek 1283s with the retention bracket. This would allow you to get a nice over clock on either the 5200 or a 7xxx CPU.