Currently have roof mounted EA dish with VIP722 and VIP612. Right now there are two RG-6 lines coming in the house, into the attic through an outside wall and split out to the two receivers from there. I am having my attic blown with insulation and the tech said that now is the time to do any wiring I may need done for the future. If I add a receiver or two in the future will this require anymore lines out up to the dish on the roof?