Few case fan options, Need suggestions

Hmmm, yeah so I have a stock Haf 912

I have my case fans arranged like so: 2 front intake, 1 rear exhaust

Now, I have around 13~ bucks to spend on a giftcard, I was thinking maybe a 200mm fan, I'm not sure whether to put it on top exhaust, or front intake and move the 2 intake to 1 side for the vga and 1 top for exhaust, also note one of my front intake fans is a green LED :D

I have a stock heatsink on my athlon 2 x3, but I will get a 212+ for xmas

I also have a msi twin frozr 2 6870

so, what would you do?
 
Well CM makes 200mm Megaflow fans specifically for your case.
Problem is they only come in red or blue.
Red would go with your green for a nice Xmas theme lol!
They also make a non-led 200mm fan = hard to get though
http://cmstore.coolermaster-usa.com/product_info.php?products_id=553
Otherwise Bitfenix makes 200mm green fans.
http://us.ncix.com/products/?sku=64841&vpn=BFF%2DBLF%2D20020G%2DRP&manufacture=BitFenix
Stay away from NZXT they have non-standard mountings.
Ideally you'd want to add the 200mm as a top exhaust fan.