i can understand the issue about A/C and needing a generator but i'm curious about the rest. you're in a trailer...you already have electric and gas and if you keep your water tank nearly filled you can easily last 30+ hours. You even have a 12 volt TV to watch on.
but, if noise isn't an issue just buy a cheap generator at HD.
here is a site to do some research in:
http://www.electricgeneratorsdirect....enerators.html