order the Blackhorn209 breech plug from western Powders, You'll love it! I'll PM you some links as well to help you out..
You can use an assortment of primers, CCI 209 Magnums are my favorite as they are the hottest. Muzzleloading primers will not work due to them being a cooler primer, BH209 needs a hot primer.
The new Alliant powder is junk, dont bother with it!