Btw, the standard at my school is to do 5 hours as sign up, then do one hour tutoring sessions (and sometimes the odd two hour session). It's kind of nice so you have a commitment and people will be more likely to show up and continue tutoring than waste their money and your time waiting for them to show. Once again good luck with everything, I'm sure you will be successful since you're planning this out well!
Btw, the standard at my school is to do 5 hours as sign up, then do one hour tutoring sessions (and sometimes the odd two hour session). It's kind of nice so you have a commitment and people will be more likely to show up and continue tutoring than waste their money and your time waiting for them to show. Once again good luck with everything, I'm sure you will be successful since you're planning this out well!