First off, congrats on getting a bear tag. Make good use of it.
Next, if your pulling a 50 lb @ 28" bow to 29 1/2 inches, then your are getting plenty of push for your carbon arrows. IMO.
Keep your shots where you are comfortable. Closer is better, as you already know.
Twenty five years of experience is on your side.
That quiet, simple, bow will amaze you if you concentrate, and pick a spot to hit.
There are lots of bears "up north", come up and hunt. Best of luck. Remember... PICK A SPOT.