I have run the Hondas with an extended run tank since 2006. Usually only need one, but with two, ststarting any RV AC is no problem. In fact, if you turn the Tstat way down so the AC never shuts off, you may be able to run your AC with one Honda, after starting it with two.
On a cold weather hunt, when the temps never gott above freezing I ran A single Honda for 2 weeks straight, swapping them out for oil changes, which can be done in about 5 minutes and no mess with the proper tools and knowledge.
The Momentum I have now has a 5500 Onan, but I still use the little Hondas, as they can do the job 90% of the time, saving a lot of fuel.