Monthly Payments then Unlimited Access

Hey there!

I am trying to get the billing portion of my membership site figured out and have run into a logistics problem.

I am trying to bill my customers 10 equal monthly payments and then they get two months of access at the same level for free.

After the first 12 months are finished they will get bumped to a different membership level that is free access for a year.

I am having diffuculties figuring out what options I need to choose to;

1. Bill for 10 equal monthly payments
2. Have them get the last two months free of charge at the same level

Thanks for any insight!