I am looking to setup 4 rooms (kids rooms) with 1 Hopper and 3 Joeys. Only one tv is HD. Would all 4 kids be able to watch something different given that there are only 3 tuners in the hopper? Additionally, if I add another hopper and 1 more joey to cover 2 other tv's (family room,basement), would one of the joeys pull a tuner from the additional hopper? Just trying to figure out some scenarios because right now I have both Dish and Comcast in the house on different tv's. This would allow me to get rid of 2 Comcast DVR's, 1 622, and 1 722K.