If you want to shoot a light weight trad bow, buy a light weight trad bow and shoot it. If you want to be able to shoot a heavier weight probably like you do with a compound.....I suggest getting the heavier bow you want to shoot and pull it, draw it, pull it, draw it over and over to increase strength in your "bow drawing" muscles. Then you will rather quickly get good form to hunt, kill and recover with the heavier bow. Result being the ability and proficiency to hunt and kill with a heavy trad bow.
If you go with a light weight bow that is easy to draw with the intentions of moving up in wieght, it is unlikely it will happen. The easy drawing bows will not increase muscle strentgh and you will very likely stay in the light weight bow stage forever like so many others do. If you look around the trad world, you will notice most of the tradbow hunters say start with a light weight bow to get good form and eventually move up in weight. That advice never allows for good form with the heavier bow, only good form with the lighter bow. The same guys with that advice are still shooting their 41.5# bows. So you do have a choice and there is a way to do both.