its..... You may want to consider some other options for solar panels than a rigid attached style. They don't give you a lot of flexibility vis-a-vi where the sunlight is, unless you are parking in the salt flats of Utah or in the Arizona desert. If that's the case, you may want to invest in a generator to run your AC.
The flexible panels and the suitcase style panels give you more alternatives to get your panels into the sun, without necessarily having your trailer in the sun. If I had it to do over again, I'd probably get the suitcase style panels that come with their own controller. All you have to do is connect them to the battery.
We have a 100W flexible panel. I have it set up so I can put it on the camper shell [aka topper], on the front or back of the roof of our Pod, or on a table, the ground or anywhere else there is good light. The times I've used it we've had enough power to meet all our DC power needs, including running the heater in the morning, charging phones and a computer, lights, etc. We don't have a tele [either DC or AC] but do have a small inverter to charge the computer battery. We have power to spare.
You may want to do a quick assessment of your DC power consumption and tailor your solar panel wattage to fit your needs. There is no point in buying way more than you can use unless, of course, you want to sell surplus power to other campers who are running out of watts.