If you've never done trim work before, go buy a little coping saw and watch some youtube videos. You are not going to become a compound mitering wizard in a weekend.
That's the toughest of everything you mentioned.
I''m guessing you're replacing doors. If you can reuse the jambs, do so.
Aside from that, you kinda left zero questions to answer. Don't get stressed, it's easy. Let youtube be your friend.
Good luck, my brother!!!
