Anything else I need to know?

Solution
Paste will come with the CPU so I would not bother replacing it on a non-overclocked CPU with stock cooler.

Memory is better to buy 2x4gb then 1x8gb. Between 10-15% faster speed and compatibility of pairs.

For gaming the wifi card is a bad decision. If you cant hardwire it with etherent then the next best option is using homeplug powerline adapters like the av500 or av600 kit from tplink. Real world speed will be better then a wifi card after a couple of walls are involved, and latency will be MUCH better then wifi, which is more important in gaming then mbps.
Paste will come with the CPU so I would not bother replacing it on a non-overclocked CPU with stock cooler.

Memory is better to buy 2x4gb then 1x8gb. Between 10-15% faster speed and compatibility of pairs.

For gaming the wifi card is a bad decision. If you cant hardwire it with etherent then the next best option is using homeplug powerline adapters like the av500 or av600 kit from tplink. Real world speed will be better then a wifi card after a couple of walls are involved, and latency will be MUCH better then wifi, which is more important in gaming then mbps.
 
Solution