Splitting the horizontal tail isn’t at all bothersome, really just makes it more like so many other airplanes out there. As for the pilot hanging out the top I figure the little Pup will have a much deeper fuselage that you’ll snug down further inside… probably.Your body is a lovely spoiler right in front of the rudder. Lengthen it a foot and take a bit off. For simplicity the MM has the fin and rudder on top. You will have to split the elevator if you hang the rudder off the back.
I do like the thought of stretching it out a bit though. Given the weight difference between the lightest MM’s Hirth and the bigger half-VW or Verner I’m leaning towards I suspect I’ll need a little less nose and a little more tail than a Minimax anyways.