I'd start out with a 40-45# bow. Work on form first--get it down so it's second nature. It will be a while before you know what type bow and poundage you will be most comfortable with. The bow length depends on the style, but I wouldn't go below 60" starting out with a recurve, 64" with a longbow--or longer.

Not likely you will be able to use the same arrows. You will need to match the arrows to your bow, then fine tune things like your strike plate, brace height, and nock set. I like to keep my arrow weight at no less than 8 grains per lb.--9 or 10 is better.

Do NOT buy a bow based just on looks. Great Plains has a good reputation, but don't base your selection on what looks cool. I've only shot one or two GP bows--those particular ones weren't for me, but that is just me. A 56" bow is going to be picky. Look around for a good used (cheap) bow to get started with.

Chad