These threads will help you with your decision:
I ADDED A 8,000 BTU Portable AC To My 2004 Itasca Horizon 40AD
https://www.winnieowners.com/forums/...ad-360836.html
This unit draws only 8A on high.
If you need a portable AC just to get you through the summer, then buy at least a 12,000 BTU unit. Just make sure it takes a standard wall socket plug.
And here's some more information on taking your RV to Rocky Rocky Point, MX (Puerto Penasco). I call it an RV DAY SPA, because you can get all the services you need for your RV in one place. Just be sure to bring all your parts and specialty tools with you.
https://www.winnieowners.com/forums/...ew-358003.html
FIXING YOUR BASEMENT AC
Search for recent posts on how to do this. You can find capacitors in every major town. What sort of basement AC trouble are you having?