New(ish) to KZ Ownership

We have found ourselves taking over my parent's 2017 KZ Escape E181RB trailer, we have used it over the years since they bought it new but now find ourselves the primary caretakers of it.  We already took 2 short trips earlier this summer with 2 planned for November and December to the Washington coast.  Beyond the changes my Dad made prior to his passing in 2020, I have added a heater element to the Mach 8 rooftop unit and will be looking to add a slide awning this fall.

Some of the other things I am looking at is upgrading the inverter unit, adding a solar panel to the roof with a solar charge controller, and hopefully a digital thermostat that can control both the propane and electric heat/ac unit.

Interestingly enough, most of the items I am working on were on the project lists my Dad had left in the trailer so I guess my wife is right and the apple didn't really fall that far from the tree...

A couple of questions for the gurus in the group, I'm looking for generalized information on the KZ's:

• What's a good inverter upgrade that is rf quiet?  I'm a ham radio operator and want something that is as quiet/clean as possible
• Recommendations for a good solar charger controller?  Maybe a remote control panel?
• Is the side plug for solar directly connected to the battery? or run through a hidden charge controller?
• Is the rooftop ac pre-wired for thermostat control? or will I need to figure out where to run the wires?