In the end you will have to run two affiliate programs, one for CCBill and one for Epoch and have affiliates signup to both programs. Then they can choose how to promote, via which processer etc.
Type-ins are another matter. For those you will have to decide which program you yourself will get paid through. You have it setup as Epoch now so type-ins will remain "yours" via Epoch. CCBill affiliates would not get paid via type-ins. I don't know of any other way with type-ins. LOL
PS. This shouldn't be a 'struggle' to get the 'bucks'. Hehe