I don't know about wisdom, 7C, but I shoot hills and have a 27" draw. Either of your bows would be short for me, I think. The gentler string angle of the longer limbs reduces finger pinch and, for me, makes a bow "feel" lighter. I have two 66" bows, one with string follow, one with back set. Holding weight is holding weight, but there is, for me, a distinct difference in "feel" through the draw. The string follow starts out easier and there is a steady increase in weight throughout the draw. The backset starts out "heavier" initially but comes back with less apparent increase in weight. Of the two, I prefer the string follow. I probably didn't address your question about limb dynamics, but I hope this post is in some way useful. Enjoy your new bow!