I've done all that and more with my yearling. Except the saddle.
She is show broke, ground drives in a halter, clips, ties, loads, could care less about cars, bicycles, scooters, strollers etc. A lot of that stuff you find on show grounds. I've been throwing a saddle pad on her. Eventually I will use a rope to simulate the pressure of a girth. But the actual saddling won't take place until she's 2. I have no worries about it.
In my opinion, it can be done. I consider mine very broke to ground control, and she's not worn out of it. She is getting the winter off right now.
I would suggest finding the right horse. Personality, intelligence, bravery, and a good build are all things that will help the process along. Go for something naturally more mature than the rest of the herd, nothing scatterbrained shrimpy looking. It also helps a great deal if they have been handled since birth, but that's just my opinion.