I would not mess with a good thing if your 175 lbs and playing for a d3 school you must be pretty darn fast. I would just try to put a little more size on through diet and do it with loosing your speed. I would not do aas at your age . That could make things go south for you real quick. Work hard and eat good and clean. Good luck!!
thanks man, I now run a 4.4 but as a running back I want a but more size and speed. I will take your advice on the only adding through proper diet and training but using hypotheticals what would be your choice between the two and why?