imho it's a great starter bow, and in the future a great backup bow (or a hand me down). My wife shoots the infinite edge pro currently. she'll likely upgrade to a "high end" bow in the next year or so and pass the infinite edge on to our daughter.
at the time she got it, she tried several bows in that price point and some a little higher. this had the best feel and draw cycle for her. the infinite edge sb is a little beefer feeling and as i recall weighs a little more...you might prefer that model
it's important that the cams be in time. we've noticed that if one draw stop hits before the other you get high and low impacts. seems like it was about 8" difference at 20 yards...shooting 40-45 pounds. once timed and tuned, it's all good.
I would suggest upgrading the components for sure. get a nice rest and sight.