He should absolutely do that. He loves the game. Play it. I played college football as a 5’10” 175 pound “monster” back on defense 45 years ago at a Division II school. I loved every minute of it and have never regretted playing even though it was not at the level I wanted to be at.
Tebow has said on numerous occasions that he has no interest in the CFL. As the other poster said, it’s not likely his skills would fit what a QB needs in the CFL, anyway.