Except for personal tastes, there's nothing that needs replacing. Obviously you don't intend to O/C. So the processor and board will be fine. It should game at high settings in just about any game I can think of at 1080p.
If you need a wireless internet connection instead of the wired Ethernet that comes with the MB, you may want to consider a wireless adapter that has an extendable antenna. Sometimes the PC can be located in a dead spot for signal. By extending the antenna, you can sometimes get out of the dead spot and into a stronger signal area.