Several things:
1. Why did you purchase two individual RAM sticks instead of a dual channel matched pair kit? Just because they are the same make and model doesn't guarantee they will do dual channel in stable fashion. Get a kit that is matched from the factory because they come from the same production batch.
2. Why are you getting 16gb of RAM? For playing games, 8 gb would be plenty.
3. Why did you choose an AMD APU and then buy an expensive video card. APU processors have video built in but you won't be using it. Yet you are still paying for it. If you really want to go with AMD then get an X4 860k. Cheaper, but just as powerful as what you list. No integrated video.
4. You don't need a separate audio card. That cheap card you chose will likely be no better than the motherboard's onboard audio.
5. If you want a good gaming machine then you need to look at an Intel i5 6600k. Much more processing power than AMD APUs.
Do you have a budget?