i personally think sentinel is not the best suited for him. i think ini would be better.
I think the Sentinel role is a great fit for him. It will help him develop a deeper understanding of the game, and with two years to practice, he has plenty of time to refine his play to a Tier 1 level.
Mechanically, I believe the gap between Tier 2 and Tier 1 isn't that significant, but the way players think about the game is completely different at a Tier
1 lvl. Canezerra is mechanically superior to Nightz, but decision-making and game sense matter just as much at the highest level.
So after two years, who will be the better player? The one running it down and playing recklessly, or the one taking the time to relearn the game and adapt to Tier 1 standards?