hopefully i explain my situation well..
I have a Cable modem in the basement of the primary house, and I need wireless internet for an appartment behind the house and througth the whole primary house.
So lets call it House 1(primary), and house 2(appartment)
* i have 3 wireless router that I can use for this project.
i need a wireles router in the second floor of the primary house where im gonna have my office with wireless printer and NAS drives.
For the House2 , its ok to have internet only, no need to acces my printer or network.(Access Point)

How can i acomplish this using the 3 routers?
Can I use one of my routers(wireless off) to connect my modem and then to the other 2 wireless routers?

Thank you!