I've found shark bites to work well for general plumbing but not very rigid if you are installing something like a small filter. The fittings will allow it to rotate around the axis.
The reason we were able to drop all xfinity services was our rural electric company put in fiber service throughout it service area. They ran the line to the house and inside the house, connected everything and made sure it was working at no cost.
I had a huge smile the day I returned all of our xfinity equipment and canceled their service.
My only comment about ytv is if we watch a recording the next day it defaults to paramount + and we can't fast forward through commercials. If we wait 2 days to watch we can jump 15 seconds at a time...
Ducting is not an issue since everything is on wheels and gets wheeled out for it's intended use and then wheeled back so a short section of flex will probably suffice.