That's insane - the good kind. I have a Q: about #2 - the six strings on a seven neck, was it just to have lots of extra room up top? Who drilled the peghead tuner holes? The R: I'm asking is because I have this odd idea that a fretless guitar would work very, very much better if you had only 5, all WOUND strings. I've made a few and played a few other fretless sixes done the conventional way - fret nipper fury, epoxy-fill the gaps - and the unwound strings always die on the vine, so to speak. With five, you could go all wound, about 22-30-42-54-66 or so. A five-string bridge would be a minor problem - it needs to have the right curve, but not dead-perfect intonation, you get used to fretless pretty quickly that way. Did you have to really flatten out the bridge radius on your 6>7?
(I too, like the weird ones....) :hello2: