im an old school guy, so if i offend you, i do sincerly apologize. but here goes.
you in high school. you have lots of. years ahead of you.
just the fact that you are training is a GREAT THING!
it’s more than most at your age.
you still have to find yourself. you will not become ct or arnold in 1 year.
and honestly, you probably really dont know what it feels like to “overdo it”
im sure you think you do, when every muscle in your body is screaming at you for putting them through all this work. and they stay sore for days on end. so much so, that you think you really killed it in the gym. thats bs.
its what you do about it that counts.
so, pick a program, any program, and do it. dont overthink it.
focus on learning the proper “form” when lifting. that you can take with you for the rest of your life.
read some discussions with younger lifters like yourself also.
here
honestly. dont think so hard.
take the same energy you are using to “should we do this or should we do that”, and apply it to lifting.
in the end you will be a lot happier
and 1 more thing. i never met anyone who, at your age watches the clock to see how long the session lasts.
when i took my kids to disney, they never got tired, never! i’d go the distance with them cause i know what it’s like to do something you love as a younster. YOU NEVER GET TIRED!
my wife, she ran back to the hotel and tried to get us to hve n early dinner. my kids and i were there from before they opened til fter they closed!
woke up the next day and did it again. and again.
HAVE FUN!
training is great. it will carry you for the rest of your life.