Ill agree WO is a very risky approach. Gametime gives the only good reason I can think of.
Besides the money issue you will get a very limited window in which to show your talent. The NCAA contorls the workouts so tightly it would be hard to prove himself. Also the coaches have invested money in the signed players and they will get preferential treatment and consideration.
If like GT24 that is where he wants to go and the money is dropping off a tree in your back yard. Go for it.