Good point on the Judgement of size diamondrack, they are tough to judge especially your first one!
I didn't comment on setup, everyone has done a very adequate job of that already but will say that I've shot numerous bears with the same setup i use for whitetails, I'm a fixed blade guy but have heard positive comments about expandables on bears too!! Earlier on a great comment was made about learning the anatomy of the bear, be mindful of when you want to shoot, many times bear walk in and quickly lay down, this changes everything, I don't shoot until they stand, also with that big thick heavy coat, a blood trail can be a problem so two things, if you are offered a follow up shot, take it, and watch where they go and listen for the crash or moan, it'll make finding your bear easier....just my two cents worth.....man I'm pumped for you, getting me all wound up just thinking of getting out there in a few months!!!!!!