Yes, stick to a 12 volt system, lights,stereo whatever. Then use an inverter for your ac devices.
I use car batteries because i can get them cheap and i'm broke. The thing is to never deplete them.
I think a 5kw generator for $150 is buying someone elses problem. It's too cheap.
Consider even a 3amp solar panel, it will do the job QUIETLY.
i have seen a hand crank diesel attached to an alternator, high amps, it worked great.
I have always wondered about a
lawn mower engine attached to an alternator.
If i had an electric car there would be a solar panel on the roof and that mower engine charger in the trunk.( the exhaust leading out of or into the car depending on my mood.)