Ballistic Products has everything you need 'cept for the BP istelf.
http://www.ballisticproducts.com/Nitro-Overshot-and-Filler-Wads/departments/211/You might find that roll crimping works out better than star crimping, or you might not... it all depends on your loads. If roll crimping, you can cut a hull to any length and roll crimp it. With a star crimp, realistically you will want to simply recrimp the original crimp, so you are stuck with the original length. You will need a roll crimping tool and possibly want a shell cuter as well. A hull vise is really nice to have too.
Probably not safe to use the plastic powder measure built into a regular shotshell reloader. You CAN use the shot dispenser though if you wish.
If you roll crimp, about the only thing you really need a reloader for is replacing the primer, and there are ways around needing a press for that too.
You can get punches of just about any size on ebay if you wish. The pre-punched wads from BPI cost so little though that it may not be worth the effort of buying a punch and punching them yourself. Also, to punch a thick fiber war with an Arch punch may prove difficult due to the thickness of the material.