if you can put a little more into the APU and motherboard. Try to get possibly an A8 or A10 because they will have a better graphics chip. Also get more RAM, since you don't have your own graphics card, you'll be using the RAM as well for the graphics chip in the APU. So i would suggest minimum 8GB.
FYI. RAM will be a big deal with APU based motherboards. GPU and CPU both will be accessing the RAM, so you want the best timing with the highest speed. If even possible go with something like Kingston HyperX Beast @ 2133Mhz with CL10 timings. I know it's expensive but it will give you a big return because of bandwidth and timings. It will benefit the graphics chip really well.