RE: bow poundage question
Almost every bow will have better performance the closer the limbs are to be bottomed. In this case performance meaning more efficient. However, the increase in efficiency isn't as much as people think. Maybe a percentage point or less. Sure, the higher the weight with a given arrow the faster that arrow will fly, but as mentioned if your arrows become underspined for that weight you'll just end up with a faster, less accurate arrow.
Performance is usually referred to as speed, but speed can be had with any bow at any poundage. For instance, if you shoot 70# and a 350gr arrow you'll get a given speed. Take that same bow with 60# limbs and a 300gr arrow, set up the very same, and it should be very comparable in speed to the heavier drawing bow.
Yes, you'll give up some KE if it's a hunting setup, but outright speed is not really necessary for hunting. I've done some testing with one bow and at 35 yards there's only about 2" of change in impact with the same arrow being shot at 290 fps (60#)vs 305fps (65#). The difference would be even less at closer, more normal hunting distances.
Also to be considered, and already mentioned, is how well you handle the weight. I don't care how big and strong you may be, it's proven time and time again that lighter weight bow can be shot more accurately. This is simply because you can work on improving form and not just draw, aim, and shoot.