I would definitely try to keep the Boker original.

The James Barlow is the only one I would consider re scaling myself if it were mine especially if you end up restoring that blade to an excellent condition and using it as part of your shaving collection. The original scales seem to be partly discolored (unless it's your lighting) but if they clean up really well then keeping them would also be an option.

Either way you've got some new razors in your possession.