I plan on using the Mod.71 Ackley Imp. this year for moose..........Guess I just need to try it and gain some confidence.
I think you've got the right equipment and attitude, but do yourself a favor and practice using the sights in "real world" conditions, i.e. dark target against a brush background in overcast or fading light. You might find you have to tweak your sights with a larger aperture and/or a bolder front sight.
I've twice made that mistakes where I could not put the sights on an animal that I could plainly see with my eye away from the sights. Globe or fine bead fronts and small aperture rears have no place in the field IMO. You may lose a little precision shooting groups at the range but seeing your sights on the animal is how you'll bring home the moose meat. Go for it!