Pennsylvania ARD Cles?

I was recently given the opportunity to take ARD cles to get my record clean of a Marijuana and careless driving charge. How long do I have to take these cles, and when are they? I play basketball and don't want the cles to conflict with nights I have games or Saturdays if we have a tournament, nothing has really happened with the whole court case yet and we are going to waive the preliminary hearing and arrainment so what type of timeline am I looking at and will I be able to schedule the cles or is there I time limit I have to complete them by. Any help would be great, thanks.