Mark,
I'll probably get blasted, but here is what I have found. I dropped my #'s this year and have shot a 41# & 45# longbow most of the summer. I did a lot of playing around with the setup and arrows for each. I'm currently shooting (since we shot at Tannehill) my 45#CX, 45#Turkey Creek, & a 52# Harrelson longbow. I have them all shooting arrows that are very close in trajectory. Every afternoon when I get off work I shoot all three bows. I've been taking a 1st shot at between 15&20 yards and a second shot between 20&25 yards. I concentrate as if I were taking a shot at a buck of a lifetime (which I've been trying to do on every shot). I feel confident in any/all three of the bows and shoot them about the same. The key for me has been setting them up to shoot very close to the same. I have them so close that there is literally no adjustment that I have to do. Some folks will discount going to that extreme, but I know that it is important to my being able to pick any of the bows up and make the first shot a good one.
As for the lighter #'s. Again, there will be differing opinions, but it has helped my shooting tremendously. The lighter weight bows have made me a better shooter with all my bows. I think around 45# is the weight I shoot the best. I have longbows up to 60# at my draw length, but I just don't shoot as well with them. You have probably seen posts implying folks are trying to get by with the least (gear wise) that will do the job, but IMO if higher #'s is at the expense of accuracy, then shooting lower #'s (to a point) is not getting by with the least effective gear. All bows are not created equal either. That Horne bow will equal many bows of more #'s. Don't rule out hunting with it if you shoot it well and are comfortable with it.