RE: flintlock suggestions
If all you have is $200.00 you are going to have to look on auction boards. If you can add another $100.00 to that then get a .54 caliber Lyman Trade Rifle from D&R Sports. Net. The Trade rifle is a quality shooter, fast lock, well built, well balanced, and shoots a lot of different things because of the 1:48 twist.
Be careful getting a cheap flintlock. As any old rock lock shooters will tell you, the lock is the most important. Some of the cheap rifles have a slow lock which produces short sparks, slow lock time, and that equals flinches. The Trade Rifle I have has an excellent lock and with a sharp flint will compete with any percussion cap rifle for speed of ignition. It is one of the better mass produced flintlocks for a reasonable price.
Consider the fact that some of the top quality locks along can run you between $100-$200 for just the lock. The a quality barrel, and well fitting stock.. well you get the picture.