I did DSC 1 some years ago. It's worth doing, you will learn a lot. It also helps with stalking leases and FAC renewal/variation.
Be aware that not all shooting is from the bipod at 100yards, you will advance and fire from a variety of distances and positions, all of which count towards a pass/fail score. It's worth practicing with sticks beforehand, and make sure you take verifiably "deer legal" ammo with you on the range days or they won't let you play.