It does depend on the horse, and what they've had previously.
I usually feel fine doing all that as a late yearling and/or early two year old provided the horse was with me from birth, and knows its ground manners very well, and I know it's background.
Sounds like you have a pretty good grasp of horse minds, and how they will sometimes need you to go back and go over a lesson they know very well to increase confidence and reinforce the training procedure before you move on to something a little more advanced or just different.
Just start out w/something you know that they know, and go from there. Take it slowly and you will quickly yourself get an idea of where they are at/what page and where to proceed.
I really don't do a LOT til they are two, though I did have one that I started as a late yearling, and he took it quite well, his son was just not ready mentally until he was a late two year old, for the same training (lungeing w/the voice commands, and learning how to ground drive w/the halter. I didn't even try the bit til he was a full three).
Good luck!
Liz M.