Excellent post, only thing I would challenge is I'm not sure local musket production would be nearly enough to stop the encroachment of white settlers. As I'm given to understand, firepower was not so much an issue as the ability to field fighting men. The catch-22 here would be that the survival of proper maroon settlements would mean that they aren't attracting so many refugees from the slave system so as to seriously damage the profit margins/livelihoods of planters and yeoman farmers. If they do, settler militias or a proper expedition would likely be outfitted to wipe them out at some point down the road. Having low enough numbers to not arouse the ire of the settler colonies, but simultaneously having enough to field an effective fighting force against westward bound settlers is difficult. The Seminole nation versus Andrew Jackson's freebooters is probably a good case in point. Trade relations weren't exactly the harbinger of settlers - it isn't like if you stopped trading with whites, they'd suddenly not be drawn to establish frontier regions and later settler communities in GA/TN/KY. Not to mention the manpower required for establishing industries in mining for iron, coal, charcoal, saltpeter, etc. Labor and capital intensive, which would be very difficult to achieve with your base being low density agrarian townships of the Cherokee bolstered by some number of formerly enslaved people, which would be pre-dominantly skilled as agricultural workers of one form or another. A number of skilled blacksmiths, weavers, and miners would certainly be among the ranks, but specialized skills and know-how does not necessarily translate to being able to build large scale industry from scratch. It also requires a good bit of hindsight. If we base this hypothetical maroon community off of historical experiences with the famous Jamaican maroons, black integration into Seminole communities, or the Brazilian quilombos then it is more likely that these maroon townships in the region get integrated into the predominant economies of the local indigenous people, survive through small scale subsistence agriculture and/or supplement this with raids.