We rent when we travel, we only take a few trips far from home per year. We go to Disney every other year and I’m thinking mpg would be even worse if towing. I also use only Enterprise, the pick up/drop off feature is great, and they seem to be everywhere, also tell them who you work for, if it is a large company you get the corporate rate, that’s what I do. If we were retired and went out whenever and wherever then I would get the set up, but that just me.
Welcome to the forum and congrats on your new MH.
I park our Southwind on a gravel pad and do not use pads under the tires or jacks.
When camping I don't normally use pads under the jacks, if the site isn't level I use blocks to limit how far I must extend the jacks.
When at home I leave it plugged into shore power 24/7. I check the water level in the batteries once a month.
Don't hesitate to ask questions on the forum, there's a lot of information available.
Enjoy your travels.
Congrats and best of luck to you, you are going to love having a MH.