I have had all but 2 on your list now. i nixed the LC9, even after installing the Calloway trigger, it had reset problems, that made it necessary to grind and polish the trigger. I finally got that straightened out, but the internals of that weapon are made like crap.
My first impression was wrong, after a complete dissasemblly down to every main part, the quality of the trigger spring, trigger bar and frame are real junk.
The entire firing mechinism depends on a piece of misaligned wound spring thinner than the thinnest paper clip that doesn't even fasten to the weapon, rather floats under the trigger bar.
Along with that ,every time you clean your gun, you are pushing against the trigger bar to remove the pin that holds on the slide, and the Firing pin stop is held in, by the rear sight, which comes loose even if you locktight it, "which then makes it impossible to adjust.
My advice is to remove that gun and the Keltec. Go with the 26 or the shield, I traded the ruger back to the gun store that I bought it from and it cost me $100 to correct a mistake, the M&P is in 40 and is very well made. The magazine in the lc9 was even starting to slide the baseplate off, "by the way I have a spare unused lc9 mag I kept as it was bought seperate from the gun, contact me if interested.
Get a quality gun, I never would have bought that ruger if I could have seen how it was assembled. that's why parts like springs are $2.00 on the website, they are poor quality. They may shoot for a year of light handeling, but the way it's made it has to fail.