The elders are only guys, nothing more. Don't cloak them with the attributes of Israelite Priests; the fact is that the Israelite Priests were only guys too, with the benefit of hundreds of years of image-polishing. So don't be stunned by ANYTHING your "elders" do, if they screw up, they will be the first to tell you that they are "just IMPERFECT men" prone to err -- and they forgive EACH OTHER, which is a nice gig.
Unlike most who post here, I will give you your secret key to freedom. Keep this a secret until the day you use it and it will work for you. The secret exit key is that the day you turn 18 you join the US military (I am assuming you live in the US). You seem smart... if you REALLY are smart you will apply yourself in school and pursue improving your physical fitness: Don't let the old "bodily training is beneficial for a little..." mantra disuade you. Be low-key about it, but strive to improve yourself in ALL ways.
When you join the military, they will offer you tests to help them decide where to put you. You want to score as highly on these tests as you possibly can so that you are not seen as a mere grunt. Remember this advice, it is your key to personal salvation. WHY? Because the Watchtower thinks you have NO options. If you are in your parents' home you are under their rules. So you LEAVE their house and become your own man.
There are times I wish I had this advice 50 years ago, but I didn't.