Sounds good, especially the part involving your son
Get some extra ammunition while the sale is still on and practice A LOT. Most kills are made by good shooting and your set-up will be fine.
While you are at it, put up a target at 200, 250, 300,350,and 400 yards and see if you are comfortable with the accuracy you get at such ranges.That was an educational experience. I looked at my results and decided to limit my shooting to XXX yards. I like elk with just one bullet hole.