I would hold off right now, unless you are sure that's exactly what you want. It may be worth your while to do some more research and spend a little more, or maybe less.
I'm descend from old Southern families dating back to early 17th Century Virginia. Some came from the northeast through Boston, most came from Virginia through the Carolinas to Georgia to Alabama.
In my study of the American longrifle, over and over again there are references to the Great Wagon Road. The Great Wagon Road starts in Lancaster Pennsylvania, goes through Emmitsburg Maryland, through Winchester Virginia, down the Shenandoah Valley and Valley of Virginia and eventually across the Blue Ridge in South West Virginia/North Carolina/Tennessee.
It was kind of a gel type moment when studying the American Longrifle, I was seeing the same place names as in my study of family history.
So since the GWR was a main migration route to the Southwest, just about any rifle made from Lancaster Pa to Watauga VA/NC eventually TN would be appropriate.
Two Cherokee or possibly Muskogee graves excavated in late 50s early 60s in NW Alabama provided some interesting information. One grave had the remains of a fine "Pennsylvania" type longrifle. Both skeletons had a ball in their rib cages. These could have been Rev War Chicamauga Cherokees, or casualties from the Cherokee Wars of 1794. Most likely they were from Rev War raids.
The earliest SW VA/TN/NC made "iron rifles" date to the late 1780s to 1800 or so. Now there are some mystery rifles that could date early, but for the most part, confirmed very early or Rev War TN or western Carolina made longrifles are lost to history. We know they existed but we do not know exactly what they looked like.
So for the reenactor or someone who has interest in that period and region, the best bet for a rifle is a confirmed brass trimmed 1770s PA,VA or NC rifle for the Rev War era. If your interest is closer to and post 1800, the very early iron trimmed mountain rifles start to show like the Bogle Rifle.
IMHO what the main factor in your decision should be date rather than region. A rifle made in PA simply has to travel to the Southwest Frontier and that's very probable. On the other hand it is impossible for a 1810 era Tennessee to travel to 1780 Tennessee.
What hurts the "Golden Age" kit for me is the straight barrel. It's fine for early 1800s but by far most hand forged barrels are either swamped or tapered.
One thing about pre-carve kits, is sometimes the lock mortice is too large or in the wrong spot making the build even harder. For a Generic "kit" Track's Colonial with no lock inlet may be easier than the Golden Age when all is said and done. I like the 44" Beck and the 38" Haines but unfortunately Track of the Wolf seems to be out of most swamped barrels and most locks at this time. So do not be afraid of a parts set with out the lock inlet. You can always practice inletting the lock on scrap wood.
Do get some building books and proper tools. Do research of the time and place in question.
Here is a link to some nice part sets and barreled stocks. Unlike a lot of the "kits" these come with the barrel fully inlet and ready for the breech plug to be inlet. Most kits need the channel squared for the breech and final fitting of the barrel.
Link Knob Mountain