"Sounds like it will easily outshoot my abilities."
No such thing. If you shoot 3 inch groups and your rifle shoots 3 inch groups you get 6 inch groups. It is always the combo. I don't know why the mags always seem to say this (allows them to cover for a bad test rifle). If that weren't the case we wouldn't need target rifles.
The numbers quoted here, sound reasonable, but don't really outperform claims and press for the Marlin guide gun. The two advantages I see to the N1, other than good looks, are that it allows/requires reloading to a longer OAL, which means a lot more potential power, but if you get loads designed around the shorter lever actions, as most are, you get a jump to the rifling and less accuracy, so I would consider it a hand loaders gun. And it is lighter, more compact, so for a guide gun ap, it is handier, but a lot less firepower. to the extent that maters in your app.