well, i wouldnt change the cpu, the chassis and the hard drives
first of all the power supply is probably a "chinaböller" (=chinese firecracker), at least thats how we call bad powersupplys here in germany. dont save money there, because if this component breaks, it might kill the whole computer! get the be quiet i recommended
second of all, get faster ram and a motherboard, which supports it
third of all, the motherboard you chose does NOT have a graphic card :
Onboard Video
Depends on CPU
no motherboard that i know off has a graphic card
amd kamk has a good point with getting more ram in the future, you might have to think about getting 2*16GB instead of 4*8