Maybe a 3rd A/C - it takes awhile to cool it down for the first time in the Texas summers. It eventually gets there, but it takes awhile to cool off the interior volume plus all the furnishings if you're starting off with everything inside the trailer at 95-100 degF. One of the things I probably wouldn't have ordered but I'm glad I have is the CheapHeat system (RVs for Less is a dealer for them and, AFAIK, installs them on all their DRV rigs.) The CheapHeat system adds electric strip heat in the furnace plenum, so I can run the furnace on either electric (for the times electricity isn't metered or is cheaper than propane) or on propane by flipping a switch. It got down to 41 degF there in Gatlinburg, and the CheapHeat system plus the fireplace kept everything nice and toasty.
After consulting with B&W, I upgraded my 18K-rated Companion to the new 20K by changing out the adapter post, base and uprights to the new 3600RVK design. The 5th wheel has a TrailAir airbag-cushioned extended pinbox (vertical cushioning) with the tri-glide loadplate (similar to the Demco GlideRide link design) to provide fore/aft compliance.
Rusty