The recurve in my avatar is 60" t/t selfbow, pulls 56#@26" and has a stiff handle and static tips. I don't own the bow anymore but I'm guessing it is about 1 1/4" from fades out to the recurves and tapered to 3/8" tips. If you sinew back a bow don't get much longer than 62" for 28" draw. A 60" straight limbed osage bow, sinew backed or not will make a good stand hunting bow.
I have hunted with 70" bows from tree stands without any problems. You just have to prepare for the longer bow and be more careful.