I have owned and shot them from 60" to 66", some times well, and 47# to 59#. My rule of thumb WAS, the heavier the bow the longer. That said, as I have aged it takes more effort and build up to shoot the 59# @66" and I am very comfortable w/ 52#- 55# @ 62" (current favs). Then there is the turkey season where occasionally I use a blind and the 60" is tight but fits. So Final answer; I like a bow that doesn't stack or rattle your eye teeth out, shoots where I am looking and fits the type of game or situation I am hunting/ shooting in. Honestly, there are so many good bows/ bowyers out there that can make most any bow weight at most any length with the above qualities and looks too that I just don't think I can say one length is what it is all about. Shoot the bow, alot, if it works for you and it "calls" to you, own it....55# @ 62".
Good luck on your build! I would love to try your bow out when you have completed it.
sw