I hope this doesnt sound to harsh...but im gonna say it anyway. If you have decided that you must move out of your parents home as soon as you graduate high school, then your life is about to get very expensive. Evidentally you are not going to college...so there will not be that many great jobs available to you. You will have apartment rent, elctricity, water, food, clothing, car insurance, gas and car maintanence to pay for sure. Its gonna be tough on you to pay all that. I dont think you will be able to afford that horse for a very, very long time. I think it would be better for both of you if you sell him.