im 15 going to be a junior next year and i also have dreams of being an aeronautical engineer--next year im going to a vocational school to study aviation and i have had these same thoughts--i figured that if i keep on a budget with these planes and try not to buy new things for every new plane (use the same servos etc) i would be alright, i also thought that college probably wouldnt cut into flying time and in fact it might give me more than i get now--so i suggest budgeting your money now and you wont have to worry as much later