A solid underlying wired network goes a long way in ensuring a fast wireless network. Your cables are responsible for delivering sufficient bandwidth to your access points without which your WiFi network will become sluggish. Therefore, using the recent cable standards such as CAT6 for your LAN wiring would be a good investment.

 

This also allows you to connect certain devices such as printers, IP cameras, etc to the wired network thereby freeing the spectrum from wireless dependent devices such as laptops, and mobile devices. Also plan on running two cables to each wireless access point because current and future standards will need the extra wired bandwidth.