I'm also wanting to get into historical trekking. Have a flintlock kit (since 2006) that I need to finish, and a premade flintlock. My nephew and I are talking about doing that together soon.
Love your rig, and the trip you took.
I would highly recommend not wasting time and energy on a mass produced flintlock, or flintlock kit. They have lots of retained value, so I'd sell both the premade and the kit and get something better.
Very few of the mass produced stuff can be made to operate correctly, and the frustration of having a cheap, poor working flintlock could sour you from the hobby. And that's not even considering how historically incorrect the mass produced flintlocks are.
I do some historical stuff and make my own flintlocks, and I HIGHLY recommend spending the coin on either Kibler's or Jim Chambers kits. For the money, vs effort, I give Kibler's the slight nod.
Rifle Kits
Jim Kibler's precise and historically correct CNC produced rifle kits If you are in a hurry, shortest wait times are 1-2 weeks for the Southern Mountain Rifle kit in Extra Fancy Maple, the Woodsrunner Kit in Standard Maple or Fancy Maple, and The Colonial Kit in Standard Maple
kiblerslongrifles.com
The bottom rifle is a Chambers kit with plain wood. Requires more work with chisels and shaper, but they work really well.
That one is my competition/living history gun, with a little better wood. Cost more to purchase up front but it looks amazing, was a relatively simple build and lock time is nearly identical to the high end cap lock guns.