I have the same L-Comp. I really like your mods, except for the parkerizing (don't like it on anything). In particular the chamfered charge holes would be a benefit, and I like the polished trigger look and feel myself. My Ruger Royal Phoenix has it, and I may have to send the L-comp somewhere for the same treatment.
And my night-sights are pathetic as well. Can't decide what to do to them, but your idea of the Big Dot and Express rear is pretty good too.
Nice gun,
The Highlander