The 2 weeks I was without power, I heavily utilized an old 1800 rpm 2.5kw Onan gasoline generator that I had converted to run on propane. My hot water heater is gas, but my kitchen is all electric. I cooked out on the breezeway with a 2 burner propane stove. I powered all except the kitchen and AC with the generator. Fridge, freezer, lots of fans, lights, entertainment center, computers, internet, etc. I would run washer, then gas dryer, separately. After a week, my 100# propane bottle was getting down, so I went on patrol to find propane sources. I'm in South Houston and ended up almost to Angleton before I found a source. I picked up a 60# bottle while I was there. The next day I tapped into my natural gas and adjusted the regulator for natural gas. Propane or Natural gas is the way to go. I modified the generator's exhaust. I plumbed the exhaust to a large muffler I buried in the yard. It ran very quiet at 1800 rpm.
Its hard to find slow rpm generators though. They are quieter and are better capable of continuous duty. When I gave the generator a break, I'd power the living room tv, lites, fan, etc with a 500watt inverter I've had forever.