Hey can someone tell me if this is a good idea and tell me the consequences?

ok so last monday i got bored so i drew out my school and i got an idea of just a random attack on it i was thinking when forth of july come by i would get a bunch of cherry bombs and empty them into a pouch and put a lon wick on it and put it on the gl doors on my school taking down the outside door i get through and take off the id=nside doors and i throw more down the halls and i could empty g into the air vents (thinking that the air conditioner would speard the fumes....then run up and down the halls emptying gas and flammable liquid around on the floors the i use a chrry bomb bomb on the office dorrs to get in and poor the flammable stuff all over every paper and empty it on the computers so they burn nice and good.....and when im done got to the outside one the schools and bust down the windows to the office and throw a ragg thats on fire sendind the place to flames.....bot i want to know what would be the consiquiences for doing this andwhat laws would i be braking? sorry for typos the spell checker wouldnt work