I don't know if this will help; but, we have found Enterprise to be extremely gracious and accomodating anytime we have called them. From Gloucester, Mass....rural Pennsylvania to the swamps of Georgia and beyond, they always come to us.
If I were in your position, I would ask what size motorhome would both make us comfortable and we could afford; and leave the rest sort itself.
In most cases, other than Walmart or Home Depot lots, you'll find parking difficult in anything above a conversion van. By the same token, my wife and I pulled a car behind us for our first two years aboard, only to find that after a long day of traveling , the last thing wanted to do was disconnect and drive somewhere .
These days, if we tow anything, it's usually our jetski and we leave the rest to Enterprise.