Get a Lyman or gently used T/C. The reason I say "gently used" T/C is because T/C has almost completely abandoned their flintlock sales and the Hawken has a MSRP of $700+.
You need to decide what caliber you want. The .50 or .54
I have 5-6 flintlocks but only one .54--------I love my .54 Lyman Deerstalker.
There are a bunch of variables on your choice (ie-----Type of hunting you do...etc).
Look around and do some research.............My advice is stay away from Traditions and CVA BUT that is my opinion.