Ang balak ko tsong ganito
amd a8-6670k
Gigabyte F2A88xm-HD3
8Gb Kingston HyperX fury 1866 2x4
1Tb Hdd
Corsair VS650
Fractal Core 1000
Cooler Master Blizzard T2
Sakto kasi sya 20k
Okay naba sya? o masyado akong gumastos sa psu at case?
AMD a8-6670k? do you mean A8-6600K or A10-6790K? checking the AMD APU list I think you misspelled the APU model.
Anyways, I still would insist to get a Kaveri model processor since it has a better built in GPU at mas ok yun for gaming.
Motherboard is ok. Gigabyte, yun ang gamit ko ngayon. (Better for audio application daw kasi)
Your power supply is too much for your components. Compute here ->
http://www.msi.com/power-supply-calculator/450W is enough, kahit mag-crossfire/dual graphics ka pa, as long as it's a good brand.
CPU fan is ok. Dual memory is always better than single channel but I think at most 50% lang ang magagamit mo sa mga yan.
Casing is a matter of taste. Just make sure you have an input and exhaust fan in yours to help the system stay cool.