Breaker issues

In reference to my previous post I also have a 12-3 extension cord coming to run from my 110 to the plug-in in the motorhome that may help I'm not sure but both of my rooftop Ac. Should only pull about 25 amps together that should leave me plenty to run that room AC I'm going to try the larger extension cord and I'm going to also have a 50 amp breaker installed in my house panel and run a remote plug so I can plug the 50 amp on my motorhome in thanks again for any help