As long as you screw up when you go over the questions for baptism with
the elders and maybe tell the elders that you don't feel ready, there
isn't much your dad can do, is there?
Tell them you have sincere doubts. If you're not baptized they should help you and worst case scenario can "mark you" if they determine you are "apostate" and bad association. But, be sincere. Ask them to explain all the things that are inexplicable. All the things that disturbed you (and all of us).
There is the overlap generation thing. At least some of them will think it's BS too. Refer to Matt chap 1 and what is said about "generations". No overlap there.
Ask them about the promise/prophecy that "Million now living will never die" and the fact that they are all dead.
Show them a copy of the May 22, 1969 Awake! magazine telling teenagers they will never complete college before Armageddon.
DEFINITELY TALK TO A SCHOOL COUNSELOR.
Tell us in what area (not exact) you live and tell us about your extended family -- how many JWs, non-JWs you are close to in the family, etc