Radarr helps manage your movie library, Sonarr and Lidarr are the same for TV shows and music, respectively. Prowlarr will integrate with all three to search your favorite torrent tracker or NZB indexer for content added to your library. They'll integrate with many popular torrent and usenet download clients to automatically download and import the content to a Jellyfin library. When paired with a request service like Jellyseerr, you can hit a single button to request a movie and have it show up in your library 10 minutes later.
It takes some patience to configure everything, but there's some really great guides out there. Feel free to drop me a DM if you have any questions!
Audio/video contractors are absolutely a thing. It involves a lot of TV mounting, but there's usually a lot more behind the scenes.
Source: I am one
You can't connect any Bluetooth audio to the PlayStation (Source: Sony). You "can" use a USB Bluetooth dongle and pair to that, but the experience isn't great with audio latency.
Listen to this guy. Most LED tape is 12V or 24V. A 5V 20A power supply may meet your wattage requirement, but the LED tape will need it at 12V to function properly.
If you have a local audio/video company, give them a call. Most of the big brands have a whole product line geared towards hospitality use that gives much greater control over "smart" features. They're usually not available to the general public, but an A/V dealer should be able to hook you up
If it's cable internet and not fiber/DSL, I'd look at connecting the ISP's coax to the house's coax. Provided all of the house's coax ports are connected to a splitter, you could feed the ISP coax into the nearest port and plug the cable modem into the office port.