For the saddle/seatpost extension to the rear when folded problem, a solution I use often on other folders is to turn the seatpost 90 degree when folded.
Another issue you should maybe consider if you are a tall guy is the relatively short distance between saddle and handlebar (compared to a Brompton S or Birdy sport for instance).
Last edited by Jipe; 02-02-21 at 05:19 AM.