Id bet the same thing. I shoot a lot of 9mm out of Glocks, and ever since I got my first 17, back in the 80's, they have never liked "light" loads. They like them hot, and Glock even sent a letter around back in the late 80's stating so.
I've had a bad experience with Lone Wolf 40-9 barrels. Honestly, I'd just buy a G19 if your finances allow it. Any type of "customization" will limit the reliability of the gun.