Need extreme help on College Tennis, is it still possible for me to play CollegeTennis. What do i have to do?

Okay i have been playing tennis for about 2 years and half. And beaten players who are high rank in the usta midwest in western michigan. I only did one tournament and lost to the 1 seed but that was like 6 months ago. I am different now trained harder and think i can go to a straight win these three months. I am senior in high school and i heard that i have to pay $65 to the eligibility center and to tennis application videos, in order to play college tennis. Is it too late to play usta junior tennis tournaments and play college tennis. I am 17 right now and turn 18 in late July. I really want to play college tennis. I mean i already beat some college tennis players in small D 2 colleges. I honestly think i have a chance. Could i get scouted by D-2 colleges by small usta tournaments. Also if i win a straight 7 win tournaments around my area would that help or not? I need to know if i still have a chance? Its been said that people who play college tennis have a 95% chance of graduating. Please help me i love tennis and want to play it! It could be awesome if i could play small D-1 is that possible? Want tasks to i have to do?