I dont have your system but am in the middle of a TV replacement project on a front system. However, your new flat panel TVs are going to have multiple HDMI inputs and you certainly want to use those with HDMI cables. If you are installing a blueray player then you certainly want to go from the BlueRay HDMI out directly to the TV with an HDMI cable. I NEVER watch TV from the bed, so I did away with connections to the splitter and largely am ignoring all of that switching. I have a satellite system so from the sat antenna to the DishNetwork box with coax, then from the DishNetwork box to the TV with HDMI direct to HDMI input #1, and my BlueRay player from HDMI out to HDMI #2 input on my TV. Simple and I have everything that I need. Hope that gives you some ideas. I think your assumptions are fundamentally correct unless you want to also run all of that back to the bedroom TV if you have one.
Gary and Dee, Zowie and Bowie (traveling cat sibs)
2019 Cornerstone 45B, X15-605hp, Imperial, Spartan K3,
2013 Honda CR-V toad, Demco Excali-Bar II,
Demco Baseplate, Demco Toad Light system, 73 de W5Fi