hi, just a general question. i am 6' 3.5" and seem to prefer a very short top tube. based i bikes i have ridden i think that a 64cm frame with a 58cm top tube and a long steerer tube would be ideal. this is with drop bars and a 90mm stem and a very setback saddle. if i was to have a custom frame built up (for light touring/audax/road) are there any handling problems/overlap problems that would arise from this frame sizing? have you encountered anyone who prefers a frame sized like this? thanks for replying to this awkward question.