Wires from Dish to inside house

Setup needs RG6 solid copper core to each place you need a TV.

There is no completely wireless setup. There is a wireless version of Mini Genie Clients, but the main Genie must be wired no matter what.

Mini Genies have no tuners or recording space of their own so steal that from the main Genie. A Genie and HDDVRs on each TV instead is the more capable option, though those regular HDDVRs may be low in stock as AT&T tried forcing an all-in-one setup.

In any case, having pre-existing cabling or such does not change how you order it. What matters is if you are a current customer moving the service or returning from being a canceled customer.

If current customer, you call and place a Movers order. Before doing so what are the models of each box you have now? Best to get guidance so you don't accidently downgrade your setup by bad info from an agent.

If returning customer, call and order service for however many TVs you have.

With either order, if you are dead set on wireless (up to 80 feet from WVB in ideal conditions), then you let them know you want wireless. You will pay $99 above the order for the wireless setup.

Agents over the phone aren't installers. So they can go over capability of boxes and place the order as well as discuss billing. They usually don't know the specifics on the physical install as that is the world of the on-site tech.

All the wires needed would normally be part of standard install. Those wires you already have might be able to be used, but only tech on site can be sure if they are completely compatible and what condition they are in.

Dish will have cable going down to the SWM splitter. And then from there, one to each wired box (unless there is something special about your place.

Are you trying to prewire yourself? Seems like a waste of money as the tech has to do that anyway.

One RG6 solid copper core is run from the dish to the power meter to be grounded then run to the main Genie.

With a Genie and wireless clients you need rg  6 going to the main receiver and another device called a wireless video bridge which is what broadcasts to the clients. This is often placed next to the Genie so you only need coax going to that one location. It may also be placed at another location for better signal to the wireless clients but will need coax going to it. You say you are a prior customer, will the order be as a mover or new install? Techs are able to change orders to wireless at no charge in new installs. If a movers order you want to be sure the order is built with wireless if that is what you want. If you have not had an upgrade for a couple years, they will likely upgrade you at no charge if you ask for it.

Another option is the Genie 2. With it the main box does not connect to a TV so you have a wireless client at all locations. It can often go where all your cables run to and and has the video bridge built in.

Since you say you have rg 6 in all locations already, wireless may not be much of an advantage to you. Some folks like the flexibility of being able easily move them around anyway.

DirecTV cannot share coax with another service. They and Starlink must be separate cabling.

The two wires per box was the old multiswitch for the 2 tuner DVRs. As genie is 5 tuners, that would have been an octopus of cabling. That plus the data transfer for Whole Home DVR they had to change to Single Wire Multiswitch (SWM), so is now one cable per box.

A 2007 install would be replaced as is completely outdated.