You seem very sweet and thoughtful, and open to criticism, so let me point something out, with no malice in the mentioning. If you can fix it before you ever start this project, it might be feasible WITH a trainer at your side. I am looking at your avatar, and I don't know how long ago that picture was taken, but I see a woman that doesn't know how to ride. At all. You might can stay on a horse in a ring, under supervision, if that horse is insanely tolerant. You're leaning way back, heels up, hands high, off balance. It's ONE photo, and it tells me that you aren't ready to ride a reactive, well-trained horse, much less train a young, reactive, colt or filly into a well-trained horse.
I STRONGLY urge you to start taking riding lessons or learning to ride well on a very well-broke, tolerant horse. I am not the best rider in the world, but I can more than stick a horse, and *I* am not suggesting I break a horse from start. Lay your personal foundations before you even start thinking about training. Start figuring out what it is that YOU don't know about the art of riding before you even THINK about teaching a horse to carry a rider.