How To prepare my mind and body for the upcoming wrestling season?

Im 16,5’11,178 lbs.9% body fat – We started weight training and conditioning the beginning of this week, and i need to lose 7 pounds by the end of october. I want to do it the healthy way, i.e eating healthy, increase my muscle to fat ratio. DRAMATICALLY, build my endurance and stamina. How do i burn fat while building muscle. Thank you…