I just bought a used Radmini 2016. Works well but rides rough over bumps, etc. I'm used to suspension frames. Anyone try adding a suspension seat post to take out the bumps of the ride? there are some good reviews of these posts on Amazon, but curious if anyone has tried. PS: I'm 6'4" and need a 400mm seat tube and so need to replace to get an additional 1.5 inches in length.

And there are some handlebar suspension add-ons that are available, too. I guess that could be an option for front end softening of the ride.

Any suggestions or thoughts? THANKS!
-RanMan