I don't think you are going to go too light or too long with your first bow.40-45 @ 28 will be fine, even if you are drawing 25-26". You want a bow you are comfortably in control of, one you can shoot lots of arrows through without getting tired or getting sore fingers and shoulders. You can go too heavy and/or too short though.

The first bow is just a stepping stone--a starting point. From there you develop your form and start developing your personal taste in bows. You don't really know yet what you like or don't like, and that will most likely change several times over the course of a few years, as your style and form most likely will.

The first bow may not be legal hunting weight (or it may be), but you will be doing yourself a big favor starting out light--your will improve faster, you'll be able to shoot more, and you will enjoy it more. This is no time to start feeling macho--folks are a whole lot more impressed by the guy hitting the spot every time with a 40# bow than the guy who can't hit a barn from the inside shooting 80#.

Start out cheap and light--keep it fun, keep it simple, and get as much good information as you can. You'll start developing habits, good or bad, from that first arrow--and the bad ones are hard to break.

Don't worry yourself trying to fine-tune everything at first--you have to establish your form, and while doing that you'll change quite a bit--which makes fine-tuning impossible. Work on the basics, and when you have those more ingrained you can start on the more technical stuff.

I'd go with carbon or aluminum arrows, to start with at least--that keeps it simpler. Btw, there is a wide variety of glue-on field points, broadheads, and blunts for wood arrows, but wood arrows require a bit more understanding and right now my advice would be to eliminate as many variables as possible.

Good luck!

Chad