If it were I, I would not store it with hydrolic levelers down. That exposes them to weather. If you do the add that to your monthly maintenance. Run them up and down, at least twice. I would use 2x12 or synthetic jack and tire pads. This disperses weight and gets the tire off the ground. I like synthetic as the do not hold water. If I could not do monthly maintenance, levelers would be up. MH are autos first and designed to sit and travel on your axles and tires.
If you can do monthly maintenance and a 12v disconnect switch, you got it made. If no 12v disconnect then now is the time to install 2 or you can just disconnect the negative post to break the circuit. You can probably get away with out a 12v disconnect but you better have jumper cables ready for jumping the engine. Better to have and not need. If your parasitical load is high, I suggest using the 12v disconnect. Do you really care if your CO2 alarm is working when you aren't there?
You can get away with about a 3-4 hour monthly routine.
1. Check batteries fluid level. Fill if necessary.
2. Check batteries SOC. Got a voltmeter capable of 12v?
3. Reconnect batteries.
4. Start your engine. Jump if required. Let run for an hour.
5. Run your levelers now.
6. I do not start my Gennie until I am ready to turn off the engine. You could do some simultaneous.
7. Start your Gennie. Let it run for an hour. Load it with 2 heaters or maybe 2 AC for Florida. I also turn on all my over head lights to work the incerter/charger into that load.
8. Since these events take awhile, on the second time I put my levelers down, you have some time to work on your honey do list.
9. Check your battery SOC (after stopping gennie).