newbie help

[mommyofmany]

I have been buying diapers on FSOT and here was what I have so far:

3 Nb bottom creeks
3 nb swaddlebees
3 Kissaluvs 0
3 small bumgenius 1.0
6 xs bg
3 fitted pattynaps
4 wahm aios nb

I only have 1 cover which is a newborn diaperap. I found it at a resale shop for .40 so I figured for that price if it isn't any good it's not a big deal. As soon as I find a pattern my Mom is going to make some wool soakers. Any ideas on a good yarn to order? I need to get some prefolds,but am unsure on what size and how many to order. I am a bit overwhelmed at what size and what else to try at this point. Or do you think once I get some covers and prefolds I have enough until I see what works for us? Also can I wash the Bg with the others? Thanks for any help!