The problem with this is that the A10 unlocked version is actually a fair bit more than the graphics card and the A4 combined. The integrated one is far less powerful than the 6750.
I don't want to spend more money, I just want the cheapest build possible that provides the necessary power in game. I just really don't see why there's a problem with the CPU and GPU unless there's bottlenecking, and I don't see why I can't use a mATX board and a micro case? If you could elaborate on that, it would be much appreciated.