We'll be cding this little one as well. I loved the Bummis organic prefold kit (BTW, our kit came with a few liners for the meconium so you can start using it right away) in the beginning and I also hand a sampler package with a few other diapers and then around 4ish months we switched to mostly pockets - a mix of OS and sized Fuzzi Bunz and BumGenius for no particular reason other than they were on sale. Even with our chubbier baby, they've both worked fine so no complaints and they've always been very simple for DH and the rest of our family, too. I do prefer the FBs because of the snaps, but I haven't had a need to try the BGs with snaps so maybe I might feel differently once I do. This time, I'm tempted to have more pockets from the start so all the diapers can be washed together if DS isn't out of diapers by then. I love the idea of a stash and a greater variety, but for me I find I get lazy with having to wash things separetly, etc. and it's not my weakness (carriers are).
I will say that I do usually use use a hemp or bamboo fitted at night with an Aristocrats cover though
You can throw everything together. I know when you wash hemp & stuff like that for the first time you have to wash it separate but after that you don't need to separate anything. Unless you know of something i don't know. Velcro can be a pain in t he laundry tho. :/