To expand on what Ite siad---I think he means that it may be wiser to choose a bow that CAN be maxed out at 60#----50-60. 60# or so is enough for anything in North America with a well placed shot.

You may be a big guy, but don't let testosterone get in the way of common sense. The muscles you use for shooting are not what you use in everyday living and working. It'll take some time to develope proper technique and you don't need to strain muscles doing so. Also those muscles will develope memory over time and you want that memory to be doing the right thing---not struggling.

Good luck to you.