I would suggest waiting to at least sit on a 2020 before committing as well. And SL sponsor M2 Shocks can certainly fine tune a set of shocks for your specific weight range. Keep the faith, my wife wouldn't ride on the back of my ride anymore, until a friend brought his F3 over for us to take a first spin on a Spyder. Once around the block with the F3 and she sent me off shopping.
We love our '13 RTL, but with the extra room and lower CG that the '20 purports to have, I'll definitely be checking it out for a trade up.