Assuming you want to take one of the Hoppers when you travel with the RV.
You need to get a Solo for the RV. If you are only going to use a tripod, the Solo could be mounted outside the RV so only one cable needs to enter the RV. But I would recommend putting the Solo inside the RV and using two input cables from the dish. Someday you might want to use a Joey in the RV bedroom.
Do not use the "Cable" coax input for satellite. It is connected to the roof batwing antenna amplifier and distorts the satellite signal. Add coax inputs for the satellite dish.
While the portable domes dishes looks easy, to be able to use your Hopper well, you will need a dish on a tripod. For most RVers, the WA and a DPP 1000.2 or 1000.4 with a WA head. If you are going to spend all your time in the East, then a regular 1000.4.
For the tripod, I recommend TV4RV.com, the HD model. It is an adjustable length leg tripod that makes getting a vertical mast on rough terrain a whole lot easier. Invest is a good meter.
If you RV is areas with lots of trees where you would have to position the dish a distance out, invest in solid copper core dual coax RG6 cable.