We looked at the Fun Finder a couple of years ago and really liked the 189 FDS but also really wanted the island bed.
Our "16" is 20' 10" from hitch to spare tire. The coach itself is 16.
Part of the deal is dual 6 volt batteries, dual propane tanks with auto switch-over and weight distribution hitch. I almost didn't ask for the 2nd propane tank since it's so east to change out a tank compared to changing one on our popup trailer. I asked for it to be thrown in as part of the deal not really expecting to get it and they said OK. Free is good. Yes I know I paid for it. We've never had a freezer or a microwave before so that will be something new.
Thanks for the reassuring info about the Frontier. They really are strong trucks.