Thanks a lot, all, for the input.
I decided to get the Sevigny sights (I don't like FOs), tru-grip, stainless steel guide rod, and a set of recoil springs (13#,15#,17#).
I decided to do a trigger job myself, partly because I need some use for my new dremel tool, and partly to learn how my glock works
In case other newbies are reading this, I found great instructions:
here and here .
So I will get a 3.5lb connector, reduced power striker spring, reduced power trigger spring, and a glock disassembly tool
I also need to make my mags fall free more easily. I found some suggestions that the mag catch spring could be bent a bit, so I'll try that.
And last but not least, my mags do not seat when full (10 rounds in 10 rd mags). If I use enough force to slam them in, I can't cycle the slide, and the topmost round is marked by some part in the frame which I don't know the name of yet... I think I will just try to remove part of the mag springs...
Then I'll be a happy camper