you could move the cable connection to his room but your isp will charge for that, and he will have the modem and the router in his room. having a long ethernet is better than wifi but not as good as having a 6ft ethernet cable to his pc/console. as of brand i have no clue besides that cat6 is better than cat5e and cat5 in terms of wiring because it can handle up to 1000mbps or 1gbps, so maybe ill learn about it here.