A.B.
I'm not sure what Cloth-Eez prefolds are made of, but I would highly suggest using hemp or bamboo at night. We have some hemp prefolds at the store that are totally awesome.
You might want to consider a wool cover for over night too. You can make them yourself out of old sweaters, if you are handy. The Aristocrats wool soaker is also extremely popular for overnights. If you don't want wool, I would go with a one-size cover like the Sweet Pea. That way you can adjust it based on how much you need to stuff it.
Another really good option for overnight are the DryBees Fleece Pockets. I always stuffed mine with a Super-Do insert. They worked great.
Just keep in mind that hemp is about 40% more absorbent than similar weight cotton and bamboo 60% more absorbent than similar weight cotton, and cotton, hemp, and bamboo are all more absorbent than microfiber (the least absorbent diapering material). So even though these fabrics are more expensive, they are totally worth it for a heavywetter.
HTH! Feel free to call the store (The Giggling Green Bean) at ###-###-####, if you need more help:).
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