I'd start small - just 100 cases. Sportsmans Warehouse, Cabelas, Midway, Dillon, CTD all sell popular brass in 100-unit lots. I say start small b/c you may have a good source of range brass and if you get ready to buy in bulk then I'd try the Brassman or similar.
A bag/box of 100 will give you a set known parameters to work from. I'd recommend Win or Rem b/c they are relatively inexpensive for experimenting with. Once you get your technique and load tuned, then you can start big-batch reloading.
"I'm your huckleberry."