First Time Training a Green Broke Horse
I am currently in the market for my first horse. Prior to this, I have leased extensively and finished my fair share of my trainer's green horses into lovely lesson ponies. Though, I have never trained something so green that its experience ends with being able to saddle it and sit on its back. Normally, my job is to put miles on unbalanced, inexperienced horses, sit some protesting bucks, and work out bad habits.
I want my first horse to be a project for me, but not more than I can handle. I did find a lovely paint/QH mare who tolerated being saddled and had been sat on bareback, though I don't think her experience extended beyond that. Also, she was 10 years old. Not young enough to start serious under saddle work? I don't know.
I'm not looking to show extensively. I just want something sweet and solid that I can take on trails, and her temperament certainly seemed like what I was seeking out. However, I would adore some opinions from people who know more than me about this sort of thing. Do you think a green broke horse would be a suitable first-time ownership project?