I would like your opinion if this much exercise can be bad and also affect your gym gains and mental health in general.

Right now i'm in sport academy school and we exercise around 4 times a week for 1,5-2 hours with millitary intensity (biking, swimming, boot camp, parkour etc) After school i also hit the gym 5x a week (PPL/PP) and i do 2x MMA/Muay thai and i work 2x around 4 hours with heavy boxes all in a week.

Do you think it's maintainable if i eat enough calories for a surplus and if not what would you change?