FWIW, the future shock probably shouldn’t be something to deter you. Seems weird when you’re standing over it and can play plunger with it but once moving you don’t notice. I have an aluminum diverge (no FS) for trainer use, trailer pulling, and crappy weather; I matched the fit to my Roubaix with 1.0 FS + stiffest spring. It does makes a big difference in arm/hand fatigue over some hours on crappy midwest chipseal.