Edit (Febrauary 5th, 2013): Two hours and 97 zipties later, I completely redid the cable management.
Edit (February 18th, 2013): Added in two new case fans. (They are actually blue but there wasn't at option for that.)
For the future, you might want to change the case :) as ffguru11 said, cable management will help your system (more airflow = lower temps) :)
Try working on the cable management it will help your system.
Nice budget gaming rig(:
I would defitenly pick up another 4gb stick of ram since its so cheap I assume you already purchased but if I was you I would go with a Pentium g860 for about 67 bucks and a MSI z68 for 49.99 saving of like 80 bucks then I would upgrade the 7770 to a gtx 660ti for like 100 more
Right now I'm completely broke, but priority number one for me is getting more ram and a new keyboard.
How big is that box for the case?
Mid sized case (19 inches if that helps). Room for everything you really need.
I would put the cpu fan into push configuration. there could be at least 1-5 degree improvement in temperatures.
Or just isolate the sides of your radiator and fan with duckttape.(so it can only pull air trough the radiator).
Good part selection and pretty build you have got there.