That's really cool. It is almost the exact same set up that I have.
I have a Marlin 336 Glenfield in 30-30 with an 18in barrel. I used the XS rail but the one that does not have the peep sight. Instead the rifle has a Lyman receiver sight. I mounted a Burris 2x -20mm pistol scope with the same Leopold low mount quick detach rings that you used and added sling swivels.
It's a very handy package.
