I'd be careful and make sure you disable p2p, so if somone is torrenting that they don't get your account shut off.
A "friend" has a router Mikrotik router setup as a hotspot and shares the internet with his "family" that pay a minimal fee "for equipment expenses only". He is running 2 Engenious EOC-2611 on the outside of his house to the router mentioned above. Each computer is setup with a static address via MAC (that way people can't add 3-4 computers)
If you need any help let me know.
link for router here
link for access points here