Fleece topped hemp doublers would be great with a prefold at night. I only use doublers at nighttime and they usually fleece topped hemp. You can use them with any diaper you want.
Edited to add:
That instead of stuffing your CPF with the fleece topped doubler you can lay it on top of the prefold next to your baby's skin. It will help make him feel dry at night.

Edited to add:
That instead of stuffing your CPF with the fleece topped doubler you can lay it on top of the prefold next to your baby's skin. It will help make him feel dry at night.