HIS 4850 or Asus 9800GTX+?

HIS 4850 is $155 after rebate. Asus 9800GTX+ is $150 after rebate.

So I recently have ran into some cash during this holiday season, and it's already burning a hole in my pocket. I've got a 2 year old rig, that i'm really looking forward to upgrading. This is what i'm planing on getting:

http://www.newegg.com/Product/Product.aspx?Item=N82E16814161244 HIS HD 4850 512MB
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139005 Corsair 650W PSU
http://www.newegg.com/Product/Product.aspx?Item=N82E16820145184 Corsair RAM 4GB (2x2GB)
http://www.newegg.com/Product/Product.aspx?Item=N82E16813128359 Gigabyte Mobo
http://www.newegg.com/Product/Product.aspx?Item=N82E16819116072 Intel e5200 2.5GHz
http://www.newegg.com/Product/Product.aspx?Item=N82E16835186134 Arctic Cooling CPU Cooler

I wouldn't like to spend more than approx 550$ without rebates. So, any suggestions would be great. Also, i plan on overclocking the e5200 to about a 3.5GHz or higher cpu.

which ram should i get between these two? or if you have any other suggestions for 2gb of ram, they would be appreciated.

http://www.newegg.com/Product/Product.aspx?Item=N82E16820220144

http://www.newegg.com/Product/Product.aspx?Item=N82E16820145034

http://www.newegg.com/Product/Product.aspx?Item=N82E16817153023

that is the psu i have, i got it last year, wasnt really thinking ahead...
and i'm not gonna do any major OCing, maybe not the 8800gt at all, just my cpu probably.