You will have a fairly long draw length with that knd of height more than likely so you would lose a ton of KE or speed with a 60# bow. The thing is when you start out no matter how big and string you are you don't want to over bow yourself. Doing this will only form bad habits to break later on. A 60# bow will take all but maybe the largest game on the continent and probably the largest. If anyone you know has a bow of 70#'s try to draw it and see what you think. If you have to go in totally blind get the 50-60# limbs. Or could you wait till you get to Florida where there will be pro-shops to try bows at?