I don't have any inside info but I am guessing that Mendez moves up to 149 next year for the following reasons:
1 - It will be better for his FS goals to cut a little less during the college season and then drop to 143 for FS. This is the same strategy that Yianni, and Myles Amine used.
2 - Mendez is just so competitive I could see him wanting to go up to take out Henson - this will be espesially true if Henson wins again this year.
2 - It will be the best move for the team as it will allow both Bouzakis and Davino to get into the lineup.
I may be wrong but I think that may be that shakes out.