Okla,
You often refer to your urgent need to get out.
but i thought about it for a while and i really just wanna get out as fast as possible
If you mean "get out" that you want to get out from under Watchtower control, it appears you are already doing that. You were "out" the moment you decided it was a cult. Just stick to your resolve to refuse their leash. If you mean "get out" as to officially disassociating yourself, only a little more will be gained beyond what you have already accomplished, that is your mental and emotional FREEDOM you have now.
I'll suggest you listen to others here and take it a step at a time. Counselor tomorrow, maybe a couple of meetings with the counselor. Then give yourself time to think through the next necessary steps. YOU ARE IN CONTROL now, that is what is most important. But you are also young. If you are going to suddenly enter the adult world of decision making at age 16 you can expect to make some big mistakes due to lack of experience. Be very careful and make each decision after examining every possible side affect.
As to the legal side of leaving the WT without official WT action, PM me if you would like. The "ecclesiastical privilege" principle that protects religions from government interference is hard to crack. As Oldsoul said, in the real world you would not be held to a contract made at your age or younger. Assuming you are baptized, you made a contract with a publishing corporation masquerading as a religion. Really, since 1985 the second baptism question stated your agreement to live by the Watchtower corporation's rules. Someday this is going to be challenged by a young person who wants that contract nullified.
Sad thing is, if you leave with a big bang, your parents and friends will shun you whether or not official action is taken. There are other ways to leave the WT without such severe treatment but they take patience.
So slow down and enjoy your revelation, your new found freedom. As others here, I admire you and wish I had the Internet and your guts 40 years ago.
Jst2laws