Outback - I'm in PA too and I'd say go with the flintlock if you can only buy one. Not too sure of the PA pellet. I have 2 T/C Hawken models (flint), a CVA Optima Pro (in-line) and my latest a Lyman Deerstalker (flint - left hand).
Out of them all, I like the Deerstalker the best. Probably cause its a left hand flint. Now I don't have the pan going off in front of my nose. This was a bit of an accuracy deterent for obvious reasons. Shooting the flints are no problem. All you have to do is when your hunting in damp weather, change the powder in your pan often and I usually carry a silicon treated rag with me to cover the frizzen and lock if it rains or snows. I have it held in place with a rubber band so I can yank it off in a hurry if I need to.