Welcome to the fold. Lots of advice, some conflicting, but all meant well. Read some of the shooters forum and go to some local shoots to meet other trad folks. Hands on help is the best, plus you get to play with their bows.
My own opinion regarding shooting skills is that it will come in time, but I find no real sense in holding off based upon skills at far away targets If you wish to hunt, go do it, but keep your shots to what you can perform decently. IF that is 5 yards... do it. You will get better with practice, just do not shoot at critters beyond what your skills allow.
My opinion of starting weight ? Every one of us is different. If you can pull 100#, starting way low seems silly, but if you can only pull 50#, them a weight just over half that is not so silly anymore. It is difficult for anyone to assess your physical ability over the computer, but you can do it.
Go to shoots, find a mentor or two that can shoot well. That will be that quickest way to success.
CHuckC