Inverter vs. conventional generator. The former will be quieter, smaller, more fuel efficient and more expensive.
HF has a 2Kw generator for about $400 and a 3.5Kw rig for $650 (these are sale prices). The little one looks like a nice rig, but prob not enough to run AC. The big one is heavy enough that you’ll be rolling it around, not carrying it to your trailer.
A charm of the above 2 generators is that you can sell the purchase to your significant other with “we’ll keep it at the house in the event we lose power”.
HF also has a cheap $88 conventional generator. It’s a handy size, easy to toss into the trailer, and is enough to run everything up until you want AC. It’s durability is likely questionable, but mine’s lasted a couple hundred hours over the past couple years. It’s not a quiet generator so you can’t run it at night or you’ll annoy your beer-drinking buddies. Mine had a leak in it’s fuel tank that bedeviled me for several years. Turned out to be a hairline crack in the bottom of it’s fuel tank which I sealed with epoxy.