i'd buy local to start with. 1 box of primers and 1, maybe 2nd lbs of a different powder with a different burn rate. yes it will cost more, but by the time you factor in the $40 in shipping and hazmat fees to buy online you're probably coming out ok. No sense in buying 20k primers and 15lbs of powder to start with.
30/30 is a lot of fun to reload for. you can load some light loads and it becomes a lot more pleasant to shoot. And the lee book, at least the old one, had a section on reduced power lead loads for 30/30.