You've been away from archery for a while . . . The greatest thing to come along since the pocket on a shirt is the carbon arrow!

They are very durable (unlike some in the early days). But the best reason in my mind, is that they are always straight!
With aluminum, they may even look and test straight but can have a slight bow to them. With carbons, they are either straight, or broke.

As far as which arrow????
Any arrow selection chart will have to know cam type, poundage, weight of field point/broadhead, and draw length.

I get a lot of valuable info from: http://www.huntersfriend.com/

I agree that you should go to reputable bow shop and talk to them. Have them look over your bow. If they are reputable, their first concern will be to answer your questions and not to sell you a bunch of stuff!