Agree with comments on scopes. Rather than using an SKS scope mount. There are several Mosin Nagant specific mounts that replace the rear sight. Easy to install and very stable in my experience.
Just found an inexpensive copy that had a bad stock and almost no blueing. The good news is bore is pretty near spotless. Plan on an Archangel Stock also, and coating the barrel to match.Looking forward to a fun winter project.