Continuing to study on this.
Doing more research, found a TV I like...lol.
On the wiring... RGB/LR component is "HD" but maxes out at 1080I. That's what I have now, and that's what my hopper3 is delivering to the television.
I have room to put a smallish bluray player back by the TV. I won't be able to connect it to the surround sound, but the DW yells at me if I play anything loud anyway. Maybe I'll get a sound bar?
Still not sure on the hopper. Even if I could run an HDMI cable the spec doesn't support 4k at more than 25 feet.
Considering moving the hopper, using the existing coax for the sat signal. It's the right kind of wire. I'd be giving up park cable to that TV tho...