Have you considered 990 motherboards, like MSI 990FXA-GD80 or GD65, Gigabyte 990FXA-UD3? I think they have better heatsinks, and better chipset for that new FX-6300 processor..
Some 990 motherboards:
ASUS SABERTOOTH 990FX R2.0
ASUS Crosshair V Formula-Z
ASUS M5A99FX PRO R2.0
Those motherboards are around ~$120 to $180, but you'll get better support, functions and no need to upgrade motherboard to upgrade to better AMD processors.
You can check prices at stores like: Newegg
, and Tigerdirect