As jpeg1 says... give it some thought now - particularly where the Hub is to be located as its wifi is best described as... "not premier league". So if you arent going to use your own router/wifi equipment you will want to ensure it is centrally located and away from any potential interfering "agents".
Also your TV boxes will need connecting to the Hub (as well as the coax) - this can be done on wifi - but is always best done on ethernet cables. So a Hub location that allows you to run cables to them will help that.... in case the Wifi signal is poor at the TV box loations.
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John
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I do not work for VM. My services: HD TV on VIP (+ Sky Sports & Movies & BT sport), x3 V6 boxes (1 wired, 1 WiFi, 1 on PA) Hub5 in modem mode with Apple Airport Extreme Router +2 Airport Express's. On 250Mbps, Talk Anytime Phone, x2 Mobile SIM only iPhones.