Beautiful. I would love to see more pics of her. I would definitely float the barrel and glass bed the stock if I were you. It's cheap, easy, and you can do it yourself. Also, I would look into trueing the action. If it were me, I would stay away from a polymer stock. The wood just looks and feels so much better. Plus, this is only your first Mosin.
Here is a link for Mojo peep sights. Makes you iron sights useful. http://www.mojosights.com/mosin_nagant.html
What kind of scope did you use? May just be the camera angle, but it looks like you have a rather large objective lenses for a LER. Did the mount come with it?
Beautiful rifle though, hope you have lots of fun with her. Keep the lead flying.