2wheelluge - Welcome to this thread. I have added you to my list of RVision/Trail-Lite/HolidayRambler/Augusta list of owners. I started this MS Excel spreadsheet several years ago because I could not remember who owned what model and chassis type. Your model 213 will be almost identical to "burlmart's".
Hopefully, your experience will be similar to the majority of the owners - most have been satisfied.
Teacher's Pet - We are jealous of your upcoming trip. Since our RV is used as a mobile bedroom w/potty and fridge we left our dinette in the fold-down position and leave the cushions at home. We purchased a twin size foam mattress and it is made up 95% of the time. My wife finds it comfortable.
We also purchased a 2" stiff foam mattress topper to fit the jack-knife couch. We sewed a pillowcase for it using a couple old bed sheets. It rolls up easily and gets tossed under the lowered dinette table. It only takes a minute or two to drop the jack knife couch, add the foam topper and make a bed for me to sleep on. We are snug as bugs.
Did you have much difficulty converting the single 12-volt lead acid battery to the 2 AGM 6 volt batteries? Sounds like a unique conversion and should prove to be an improvement.