I now have a Dish 500 with DishPro Quad LNBF, this outputs to 4 receivers. I have ordered a second dish for 61.5 from Dishnetwork, and I want to be sure the installer does this upgrade correctly. What switch and LNBF configuration should he use to add 61.5? Should I keep the Quad, or should that be changed out for a DP Twin (or Dual??) and a DP 34? Thanks.