Solutions

Start from the room.Not from a parts list.

Four situations. Pick the one that matches yours — each one ends in a single configuration, checked against the exact models before anything is ordered.

See the four situations

One configuration, with the reason for each part — and the parts you do not need.

What you get at the end of any of them

One configuration, not options

One system for your room, with the reason for each part — and the parts you do not need.

Compatibility confirmed first

Checked against the exact models before anything is ordered, not after it arrives.

Written so someone else can build it

A form a volunteer can follow without you in the room.

None of these is quite your room?

Room size, camera count, software, and who operates it. Enough to say which of the four you are in — or that you are in none of them.