Is 17.5 to 18.5 hours of exercise too much?

[Ryan]

Starting on January next year i am planning to do:

Monday: 1 hour TKS (a martial art); 1 hour of weights
Tuesday: 1 hour P.E; half an hour jogging; 1 and half hours jiu jitsu; 1 hour of weights
Wednesday: 15 mins sprinting; 1 hour MMA (UFC fighting); 1 hour TKS
Thursday: 1 hour Rugby; 2 hours TKS
Friday: 1 hour P.E; 1 hour Thai Boxing; 1 hour of weights
Saturday: 15 mins sprinting; 2 hours and 30 mins of boxing
Sunday: 30 mins jogging; one hour of weights (depending on my weights routine)

I am 15 and attending school and i have time for a social life as i can see people:
monday: 4-6
tuesday: 4-5
wednesday: 4-5
thursday: cant
friday: after 5
saturday: any time not between 1 and 5
sunday: anytime: (can change exercising time)

plus can anyone give me any tips with exercising this much including how much water i should drink and roughly how many calories i should consume, and i will eat as healthy as i can as i know part of working out is what you eat