I understand your concerns! I am now 80 and beginning 2 b concerned about moving around my 4/4 size 5 string upright. I don't want to go to the electric upright, however, if you want to retain the upright acoustic sound, you should look into a bass like the Meisel, Knilling or Eminance thin body upright bass. I liked the sound of the Eminance, but it's body is so small that it always had to be amplified. However, I now have a Meisel that I converted to 5 string, which drives me nuts! As it does not have a body extension bracket like the Eminance, I have problems holding it when standing. However, when on a stool I don't have that problem and acoustically, it does sound good! Not as good as my fully carved full size upright, but remarkably well for it's small body size. When amplified, of course, it works ok. And, it's easy to move into upstairs gigs! Playing this ax and amplifying with my AI 10-2 amp makes a gig much easier!