PayPal Recurring Future Payment Question

I have used GF to create a way for a client's users to purchase dance classes on her site. The client offers these classes in the fall for 10 months. For instance, classes start in August and the recital is in May. New classes aren't going to start until August of 2012. The classes are around $60/month. She wants parents to be able to start purchasing classes NOW for August. Is there any way to have the plugin start to charge the recurring payment on a certain date? From looking at the plugin, I see that I could add a 4 month trial now and change it every month. But this would cause the charges to be charged on different days throughout the month when August comes around.
Thanks for any help on this!