SCW: The 15 hours is probably a description of how long it would take someone who is very good at building a rifle would take.
Looking at the pictures posted by white buffalo you can see that there is quite a lot of wood that needs to be removed from the butt of the stock and, as I remember from the one I built the forend is also too thick.
These estimates are just guesses at what I think a first time builder would need:
Trimming the lock mortice so that the lock will fit in place is probably a 1-2 hours.
Cleaning up the barrel channel and tang mortice about 3 hours.
Cleaning the trigger guard mortice, 1/2 hour
Installing the butt plate, 6-12 hours. This is perhaps the most time consuming and difficult task. Ask if Pecatonica can pre cut it for you. Given the amount of free time you have, their fee will be money well spent. (You will have to tell them what length of pull you want. I would suggest somewhere around 14 inches).
Sanding/filing the butt down to match the buttplate and reducing the chunky look due to the extra wood, 15 hours.
Applying the stain and finish oils, 6 hours.
This adds up to about 35 hours total time to finish your gun.
While this seems like a lot of time, remember, you still have a complete TC to shoot right now so you might think of this new stock as something to work on in your spare time (assuming you have a day off now and then).
If you choose to go ahead and build this yourself, I cannot agree more with the others comments about the self satisfaction you will have when your finished with it.
As for finding others who are willing to build it for you, hopefully they will PT you with a message explaining their available time (most builders are currently working on other peoples guns) and the fees they would require.
zonie