I have a 2018 Coachmen Apex 249, which is 28 ft total. Build quality is probably average for FR.
The single ac is more than enough to keep us as at 70 degrees when it's 95 outside, like now. It is ducted.
You will likely pop a breaker with ac and micro at same time. We just cut ac off for a few minutes to use micro. After all, it's 70 in here.
Also, if our water heater cycles on with ac running it will usually push us over 30 amps and pop breaker. Answer is to run water heater on propane.
2018 Coachmen Apex 249 RBS
2010 Silverado LT 5.3 V8
The world is a great book, of which those who never stir from home
read only a page. - St. Augustine