Setup advice

I’m getting ready to rejoin the ranks of D* and I’m looking at a set up that’s somewhat non-standard and I’d like some constructive criticism on ways to accomplish my goals. I have RG6 “home runs” from each TV location and 4 RG6 cables coming into the house from the Dish location.

My desire is to have all the receivers (3) mounted in the location where the cable runs terminate and switch them via Rf remote. I want 2 HD receivers and 1 SD receiver all with split outputs going to 2 TV’s each (I know that the program will be the same on both).

Some questions I have off the top of my head: Are SD receivers Rf remote capable? Can a split output from an HD receiver go to 1 HD TV and one SD TV? Not exactly sure what a multiswitch does, but is this a correct application, or should I use regular splitters? Is there a better way to do all this? I have Cat5 runs to all the locations, would IR over Cat5 be better than Rf remotes?

In case anyone is asking why… I have 3 primary viewing locations, living room, family room, bed room. I also have 3 occasional viewing locations that I don’t want extra receivers for, garage, bar area, guest room.

Thanks all.