I need to leave enough behind in order to operate the lights, obviously. The AV system is another question.
A separate switch on a vlan was required for separating TV / Internet from provider BELL, of course the BELL router will have to change. That will be a setup problem.
Leaving the switch/router/wap is not a big deal, minimal cost there, all Unifi. Means leaving the controller HC800, I have a spare.