JIM, I'm not a "range guy" either, much preferring to do all my recreational shooting in the Oregon outback, just out my front door.
That said, I'd opine that reducing the trigger pull weight on that Micro 9 is a very bad idea if you do ever intend to use it for CC. God forbid you actually ever had to use it for the intended purpose, the last thing you want is to have the prosecutor discover you've made it into what they'll call a "hair trigger". From my LE experience, it puts you in a very bad legal light....I've seen it myself.
But on the lighter side, squirrels with small, dinky pistols? You bet! When I'm out in the aforementioned outback, many times I'm toting my Kimber Ultra with the Compact Rimfire Conversion aboard. Ground squirrels are not safe out to about 35 yards, and jackwabbits to 52 yards.....the farthest I've ever wacked on with the little Kimber.
Pesky alfalfa-eating ground squirrel, we call "Skippy" in these parts:
And the silly jackwabbit that tore through our camp one afternoon, then stopping at 52 yards for a fatal look-back:
And just for the record, I'm a J-Frame fanboy too.