Hello, and welcome to the forum!
First of all, how often do you camp without shore power!
If often, the first thing you need to do is add up all the things you want to run off the inverter (total up the watts) For example the tv would hopefully be an lcd, the microwave (1200 watt) might already be more than your inverter can handle. Speaking of the inverter, you will need to know what the specs for continous watts and peak watts. This is important for things like the microwave that draw an initial surge higher than the rating, with regard to you CPAC machine, it will likely have a small surge as do most AC motors.
Remember, a normal house outlet can handle 1800 watts, so you have slight less than that to work with, just something to keep in mind, that`s all.
Now tying it all in to you existing outlets, I personlly would not do that without ALL of the safety modifications. For example, you would need a transfer switch so the system could automatically switch over from shore power to inverter/gen power and a bunch of wiring to make that work. So while it is `do-able`, it may not be cost effective.
But if you boon dock alot, maybe it`s worth it, but I think you will need a bigger power inverter! If you decide to use what you have and plug in one thing at a time, you should be OK, just be sure the wire size from the battery to your inverter is correct, even go one size larger to be safe.
Actually in your case, with the 26BH layout, you could set the inverter in the front outside storage compartment, then install an outlet throught the side of the wood panel into the bedroom and plug it right in. This way you will be close to your batteries and connections will be shorter. If your good with a jig saw, maybe you could mount the front plug in side of your inverter into the bedroom, that way you could see the control panel, plug and be able to turn it on and off without lifting the bed or getting out of the trailer!
A great website to `snoop`around on the help determine battery sizing, wiring size, run time etc would be Xantrex.com, they make power inverters, maybe even the one you have. They brand them as required.
2011 Jayflight 25BHS
2005 GMC Sierra 4X4 Crew Cab
'Hunter' our Chocolate Ckr Spaniel, (2007 model) :hihi: