Thanks for posting pictures of your rifle build. I think it's going to be very nice when finished.
I am unfamiliar with the originals of which you speak, so can't comment on architecture too much, but it seems to me that you could cut away 1/3 of the comb at the wrist and gently arc that comb line to mate square with the butt plate return. Also, the cheek pice is very long. If it were mine, I'd bring the forward end back about 7/8" and the back end forward about 3/4". Again, I'll say I may be all wet when it comes to that architecture on NC rifles, so take what I have said with a grain of salt.
In the photo of the bottom of the stock looking toward the muzzle, it appears that the back ends of the lock and counterside panels are not adjacent each other. When you look straight down on the stock, those two ends should be directly across from each other. In addition, the ridge formed where the upper and lower edges of the lock panel converge appears to be considerably above the wrist's centre line. I would take wood from the top so that that ridge line drops to the middle of the wrist, or slightly below it. Doing that might better line up the panel and counterside ends too.
Pls. keep us in the loop and post more pics as you go along...looking good so far.