Dont rely on wireless alone, install cat-5 in pretty much the same points as you have tv and phone points at the very minimum. It will cost you next to nothing, and you can even terminate all the services in the one socket so you dont clutter up the wall wiith sockets. Look at clipsal sockets as they are interchangeable as a bare minimum, or else look at one of the smart homes providers like smarthomes, futurehomes, or iphomenet are the ones I am aware of at the moment.
Wexfordman