Need a suggestion on some parts for my new computer

[iTz Jake]

I'm looking into building a new computer and I need some suggestions on a few parts. Here are the parts I need a suggestion on.
Intel Core i3 Processor i3-2120 $116.99
MSI H61M-P23 (B3) $47.99
CORSAIR XMS3 8GB (2 x 4GB) $48.99
Western Digital Caviar Blue WD5000AAKX 500GB $69.99
CORSAIR Builder Series CX430 V2 $44.99
GAMMA Classic Series ATX Mid Tower $35.99
SAPPHIRE Radeon HD 7770 GHz Edition 1GB $134.99
I heard that the motherboard isn't the greatest and I'm wondering if someone can help me with finding a different one that will work with the parts I'm ordering. Anyway there is one out there that is better and cheaper? Also some of the parts I can't find on newegg and I'm wondering if there is another trusted website I can find the parts on? I really don't want to use amazon. If you can help that would be great! Thanks in advance!

 

[iTz Jake]

Trying to find some of these parts on pcpartpicker, any help?

 

[iTz Jake]

I'm also wondering if I can use windows 8 with this build and if it would be worth it for that matter.

 

[mortonww]

What are the intended uses for this pc? Just gaming? At what resolution? What's your maximum budget?

 

[iTz Jake]

Yes I will be using this for strictly gaming and web surfing, 1920X1080 resolution and the budget is roughly around 500$