You would want to look at the specs on the wireless adapter on the board, vs your PCE-AC56. Most common integrated wireless is the Intel 3168. Quotes up to 433Mbps. THe PCE-AC56 does 867Mbps on the 5Ghz band. The dedicated card is better, but weigh that against the bandwidth you're getting through your ISP.
Submit photos and a description of your PC to our build showcase
See other custom PC builds and get some ideas for what can be done
Services starting at $149.99