Wood & Camera
I would try some Get-Rot and a syringe on the rotted wood. Might be just a band-aid but it did work on my boat when I had problems with some of the wood I could not replace.
The camera cable can probably be reused. When my camera system was replaced, I found some adaptors to fit the old cable and new dash monitor. That way I did not have to figure out how to run new cable. Check with the new system manufacturer and see what they offer.
GSMC(SW) U.S. Navy (RETIRED) 1967-10-03 to 1993-11-01
1995 Gulf Stream Scenic Cruiser on Spartan EC-2242 Chassis, Cummins B5.9, Allison MD3060, Toad: 2019 Jeep Cherokee Trailhawk Elite W/Roadmaster tow setup