The PUL diaper covers I have say a hot dryer isn't the greatest for them, so I would hesitate to do that.
Sewing your own cloth diapers is cool, but may not be a good realistic solution, because babies have different bottoms, and you have no idea if the baby bottom you are growing will match the diaper you are making. Also, until you cloth diaper, you don't really know your own preferences as a mom.
For instance, I bought a ton of AIOs for my son. Then realized I hated stuffing them, hated restuffing them, and hated how they took forever to dry. So I switched to diaper covers and prefolds for him, and that worked better. My friend has had 3 kids, and each one had a different body shape, so she had to buy different types of diapers/covers for each one.
Have you checked out diaperswappers.com? I recall there being home sewers on there; they might be able to give you better direction.