If you don't plan on doing your sofa then the cost will obviously be a lot less, easily half. Those captain chairs are really heavy and are NOT a one man job to get them out of the coach. It took 3 guys working together (1 inside and 2 outside) removing them and the sofa was taken apart to get out. Be sure to take a good look at the chair back cable release to make sure it's in good shape because if it ever fails you have to pull the fabric off the seat to get at it. The swivel release cable to can replace without removing anything. If you have heated seats then I suspect you're going to find the heating pads are probably breaking apart from age. I didn't even try to find replacements for mine as I never plan on traveling anywhere I would need them anyway. If you want the Monaco logo in the headrest your upholstery guy can cut you pieces of fabric to send off to get embroidered. They can use any color thread you want to compliment whatever color fabric you choose.
Here's switch I had to replace for my shade and where I bought it. I also bought an actuator removal tool but you can just use a flat head screwdriver instead. The switch will come without the actuator so try not to break yours when removing it..
Mike H's post in Captain Chairs need recovering was marked as the answer