I don't see why waiting till i am 18 would be such a big problem I've been reading the forums and i see that some people think its a great idea to start at 16.
I've also seen on the forums that this one guy said if i break an ankle at age 16 i could sue, but why would i sue if it was my fault in the first place cause i didn't follow instructions so i think i would deserve the broken ankle, leg, foot, arm, or whatever.
And sure their will probably a lot of paper work but i think it will be worth it.