Is an OTTB good for a first horse? Yes and no.
I think to answer that question, you really need to evaluate your situation, expenses (more than just gas money for a car), your training program, and yourself. I bet you are a good rider, but are you good enough to deal with a sensitive OTTB, keep your emotions in check when things aren’t going your way, and can communicate clearly what you want? Will you be willing to settle or let go when your OTTB decides it doesn’t want to jump because its terrifying, and he/she would rather be a DQ?
Do you trust your trainer for guidance? Has he/she ever successfully trained OTTBs? Do they have the experience to know about let down and restarting?
Do you have the funds for a horse at 17? Are your parents helping? Can you cover board, farrier, and yearly vet visits? Can you cover a PPE? Can you cover training rides and lessons? Can you afford new tack when your horse changes shape or steps up? Can you afford an emergency vet visit? What will you be doing with said horse when you graduate and go to college?
You don’t have to answer these questions. These are just things to need to think about. If you do get one, make sure you try many and look at a lot. Don’t just see the first one and pick. Thoroughly vet the horse and wait for a personality you mesh with. Be ready to be exhausted, sad, happy, joyful, excited, and totally frustrated all within one ride.
My 4th or 5th horse was an OTTB. He had been let down at a ranch and worked cattle for a while. I got him and he was a GREAT jumper, but he was extremely sensitive. I worked with a trainer when I could afford it, and I bought him as a fox hunter. He couldn’t handle fox hunting. It totally blew his mind. So, we went into the arena. The only time he would even think about jumping and paying attention to our flat work was when the fences were above 3’. He was nearly dangerous.
After a lot of hard work and a couple successful shows, my trainer sat me down and gave me the hard facts. It was time to move on from this horse that I was set on “helping”, and that I needed to cut ties. I couldn’t afford to put him into full training. I could not afford additional lessons. I could not afford to fix the problems I created. I would up GIVING him back to the ranch I bought it from. It was one of the most heartbreaking things I ever did, but I look back now and I am not upset I did it. I just wish I knew THEN as someone your age, what I now know.
I couldn’t afford to buy a new saddle or new fancy pads, so he was probably really sore. I couldn’t afford a ton of chiro or a PPE, so who knows what he had going on in there. He had OK feet, but they were constantly sore without shoes. He needed Dressage jesus, but I wanted to get him jumping. He needed a lot of SLOW time, but I was 17 and didn’t want to give him that. He probably could have been a GREAT horse. I just thought I was a great enough rider to deal with him. I was wrong. I am thankful my trainer finally stepped in and spoke up about him. He is now happy as a pony horse at the ranch I bought him from, and his owner jumps him every now in then for fun.
Just be honest with yourself and give yourself realistic goals. I’m not saying every 17 year old with an OTTB will go through what I did, but I know a lot of people that have… I know a lot of people will. If you REALLY think you have the time and patience, and if you know you will have a reliable professional to guide you along the way… Go for it. If not? I would say find a lease or something more suited towards you.