If your mag bodies are 40sw you might want to think about getting some 10mm ones so you can load to a longer overall cartridge length, if you load your own, or if you are ever thinking about loading your own. As far as trigger pull I have done the same as others have posted here:
polished internals to smooth out the trigger, trigger bar, trigger plunger, and the bottom of the firing pin stop where it touches the hammer.
henning xl firing pin, and a 13lb main spring(this does away with your firing pin safety)
I installed a henning flat trigger and although it's kind of expensive it really takes the slop out of the trigger on the match. (This part does take some time and effort to fit)
Fiber optic front sight from henning is a good idea too.
I use the henning 10.75lb spring in mine with really light steel loads and I think it works really well.
After market grips are nice but you can reduce the size of the stock rubber grips with a dremmel and a sanding drum if you have smaller hands.