Confused .. connection issues ?

I have a TiVo Roamio pro in my living room
I am using my Mac time capsule as a modem and back up.
I am connected in the living room to the Ethernet cable
Now I want my kids tvs in their bedroom to work too.
I purchased mini's and they won't work wirelessly
I had my cable company time warner come out and install new cable lines in their rooms.
It still won't work with the TiVo. I have to have a wired Ethernet plug from the modem to their mini's. This looks horrible and is a walking hazard. Obviously not a long term solution.

How do I solve this?
Also, moving to a different area and have to choose between dish/direct tv or Cox.
Would any of these be compatible with my TiVo? So many time warner installers (and Best Buy employees) told me that TiVo is outdated and there's no point to it anymore. Now I wonder if I made a mistake with lifetime service...
Moved to America last year and have only ever used a TiVo here.



Been trying to fix this for the last three months with no success... I want a solution that will work for here and where I will be moving to next month.

Is there a compatibility issue with the apple time capsule and the TiVo mini?
Thanks for the help!