beech,
As young as you are I can almost certainly guarantee that this will not be your last sheep tag. Once Ovisitis gets in your blood, you will want to do it again. I am exactly twice your age, and with a Wyoming Rocky and a Dall, I am still trying to get all 4.
I hope you have the time of your life and you find a great ram. I am sure you will put in the time and do what it takes, because sheep tags are so few and far between.
Since most on this site won't ever hunt sheep, I hope you will share every detail of your preparation, and hunt. Above all we will all want to see pictures, etc.
Best of luck to all who draw!