Bloodworms are probably your best bet, but you can also try chicken livers. Wrap them up in a small piece of a pantyhose so they wont fall off your hook. You should pick up some catfish off them as well.
I just posted this site in another thread, but leadertec.com is pretty helpful with crimping and all-around rig supplies. They have some pretty good informative articles with tips and techniques on how to crimp, what sleeves to use etc.
Another place to find the mustad 20/0 circles is on leadertec.com They have various helpful rigging supplies there. Here is the specific link: http://www.leadertec.com/store/product.php?xProd=447&xSec=40