I think I will replace the breaker for the A/C first as that is the only one that seemly trip when the temp outside is in the 90s. I do not run all those other items at the same time. I did once run the M/W and yes it did trip the coach main 30A breaker. But this is just the A/C 20A breaker and it maybe just old and not reliable anymore. I do have it changing an AGM battery and seems to do that just fine. At my home I have the shore power plugged into a 20A circuit to keep the battery charged. Should I use a separate charger for that? I have a small trickle charger for my rig's engine battery that works great.
