I agree with lorride on a faster CPU. Although I would save up and get a quad core i7. I wouldn't bother with a i5 quad core as it only has 4 threads as apposed to the i7 which has 8.
Another thing to consider that you could build up over time is creating a RAID with lots of hard drives. Set up in something like RAID 5 you could get something seriously fast whilst also secure. Never underestimate the effect the hard drive has on the speed of the computer.
Camera: Canon 550D with battery grip
Lenses: Canon 24-105mm f/4L, Canon 50mm f1.4, Canon 18-55mm, Tamron 70-300mm,
Accessories: Manfrotto 055XPROB with 808RC4 head, Canon 430ex II speedlite, Lowepro Nova 180AW and Lowepro Pro Runner 450AW
Oh that is so lame, every hot girl who can aim a camera thinks sheâ€™s a photographer -Stewie Griffin