If you can wait until the the Dog Trials, there are many deals...and some not so much...to be found.
I grew up in Lima and bought many a gun at the trials when they were held over by Kenton.
Before you go get familiar with the better custom components and learn how to identify them. Track of the Wolf's site is good for this if you don't have a way to do it hands on....their pictures are great.
One fullstock flinter I picked up there has small Siler lock, set triggers, .40 Douglas barrel, and a beatifully striped maple stock, for less than you would pay for a TC, GPR or Traditions.
If you can't wait, I suggest you drive over to the Log Cabin Shop in Lodi. If you haven't been there, it's not a bad drive out US-30 and they should have anything you could think you want in stock and then some. It one of the best muzzleloader shops there is.
Enjoy your quest, J.D.