Close enough for the zombies and enough range for deer
IMO... 2X is too much if a scope is all you have to aim with, you're better off with a 1X. Even that modest reduction in field of view can screw with your depth perception, while a scope on 1X allows easy, both eyes open, aiming. Something to consider anyway.
I know that Sightron makes a 1-7X24 30mm scope for 3-gun competition ("zombie distance" to 3-400 yd targets) that would work well... although it might be a bit out of your price range.