Been looking at getting Sky Q UHD but I understand that in addition to the Sky Q box I'll also have to have a Sky Q Mini Box as well although I only have the one 4K tv and believe it or not we do not use a second tv set! How will the Sky engineer set this all up bearing this in mind? Will the Mini Box not be used? Also we are using BT internet and the wifi is pretty good all around the house but wondering if it would be better installing home plugs to use with the Sky Q. (installing cable from router is not an option). Thanks in advance!