I was a wrestler in high school as well. It provides you with a fundamental understanding of discipline, training, cutting weight, and competition. If I were you, I would put all of my energy into learning as much as you can about wrestling and mastering take-downs, take-down defense and ground control. After you finish the season, make the transition to MMA. It wouldn't hurt to start learning how to box in the mean time, but I would wait until after the season to join an MMA gym and begin learning Jiu-Jitsu or other grappling disciplines.
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