HR44 vs HR54 vs Genie 2

Hello,

I currently have a HR44-700 Genie recording box that goes out to 3 C31-700 mini boxes. I also have two order boxes, H21-100 and a HR22-100. 

I am about to upgrade my TV that is connected to my HR44 box to a 4K Samsung QN90A Neo QLED. I am also going to add another 4k tv to another room.

My questions are this:

Should I just upgrade to a HR54 box, hard wire it to the new tv and add one wireless mini for the other new tv and replace the two older boxes with wireless mini's too?

Can the tv connected to the main HR54 be hard wired to send 4K to the tv?

Does a 4K output go to a wireless mini on 4k tv?

Or do I have to go to the Genie 2 to accomplish all of this criteria?

Thanks in advance