TNEW- How do you sell Pre or Post Care?

We are about to put our Summer Camps on sale via TNEW online. This will be our first season with TNEW. We set up our camps as auxiliary performances with TNEW. Each camp is it's own aux performance. We then have a registration form on the reserve.apsx page that the parents fills out (name of child, contact info, etc). If a parent wants to buy more than one class, they repeat this process.  For our summer camps, we offer Pre care and Post Care. Parents can sign up for just pre care; just post care or pre and post care in one week increments. What is everyone's opinion on how to set this up? Right now I am leaning toward 8 price types per camp on the reserve.aspx page (Camp; Camp with Pre Care Week1; Camp with Post Care Week1; Camp with Pre and Post Care Week1; etc etc... repeat for Week2). It seems cumbersome, but the most streamlined for the patron buying online.

Any thoughts from anyone else out there that sells similar offerings?

Thank you,

Jessica