If you have a truck to tow that fifth wheel, why not look at a Lance travel trailer, pull it with the truck, and use that as a vehicle to get around town while at your snowbird area?
Lance makes some nice small trailers, something you can live in for weeks at a time if required, but will make driving to your winter home something you look forward to. Not such a heavy trailer as your fifth wheel, something that should provide great mileage, because it is much shorter than the fifth wheel. Being about 12' tall and 8' wide makes a lot of air to push out of the way, but a 8' tall and 8' wide is much smaller.
Good luck in your search.
Fred.