You need to be careful when developing this idea. there are limitations in the Genie client, including Samsung or Sony Tvs with RVU, that you need to think about.
First, a standard SWM dish supports eight tuners NOT eight TVs. A genie is five tuners, a regular DVR is two tuners, a receiver is one tuner, an RVU client (DirectV client or TV is zero tuners.
Second, each RVU client when it is watching live TV uses one tuner out of the five in the Genie. So if you had three RVU TVs active, you would be left with two tuners for your own recording/viewing. That might not be enough.
Third, because an RVU client is really a remote extension of the Genie, you can't limit its operation. so an RVU client can see the main Genie playlist, without being able to set any parental controls unique to that RVU client It can also set programs to record and can delete recordings. If you have kids, or maybe elderly parents living with you, you might not want this. The alternative is to put either DVRs or receivers into at least some of those rooms. So many people put a DVR in a kids room, so they can record and watch their own shows, don't use a Genie tuner, and with the right settings can't share your playlist or screw around with anything you have. Some people with elderly parents do the same, so they can't accidentally delete recordings you might want to watch.
If you are a new customer you get the best deals, and that's the time to do get this extra equipment. If you are an existing customer, and using the Movers Connection, again that's the best time to get deals. Doing the move and then realizing after a few weeks you really need a DVR or receiver is a very expensive situation.
Post back and give us some idea of the usage of each of the rooms where you plan to put DirecTv and we'll try to give you the best advice we can.