Good for you, Hope everything works out for you and your new rifle. What unit are you hunting? I just put in for unit 211 but will mainly hunt unit 11 and 22 this muzzleloading season.
Just to start you off:
Pyrodex RS Loose powder Or pyrodex Select.
CCI shotgun shell 209 primers, federal 209 primers or winchester 209 primers.
Bullets, Im not sure what you're going to be shooting at, but if its a deer i'd go with a 338 or 348 grain powerbelt Or an all around great bullet and the one i'll be using, 385 grain Great plains bullet. The great plains bullet will be good for everything from deer or elk, moose exe.
Another reason i put the CCI primers first, i shoot a muzzleloader thats bolt action and weather exposed. CCI's are super clean and leave hardly any residue on my bolt and they've given me the best groups ive ever shot. federals come up #2 on my list but are slightly dirtier but also provide almost the same group results.
Any idea's on what bullet you'll be trying first?