Ok. Based on what you have indicated, I would suggest, in this order: Tuned Extractor and polished feed ramp/throat/chamber (if the pistol is less than 100% reliable, but in your case, if it ain't broke, don't fix it), Sites, Trigger job, Magwell and Quality Magazines with any leftover money. Remember that most failures are magazine-related, so a little money here goes a long ways. I am now partial to Nighthawk's 8 rounders, but that's personal preference and is likely because my pistol is a Nighthawk.
This will give you a better look, and set you up for entry-level competition shooting. The only caveat I have is that a 2 1/2 pound trigger is not typically considered safe for a pistol that is also going to be used for home defence, concealed carry, or anything other than a dedicated race-gun for matches where the pistol is only loaded on a hot range. The trigger is simply too light and the sear engagement surfaces are so minimal that the possibility of an accidental discharge is very high, especially with an inexpensive trigger job, as this one would have to be (you can spend a grand on a trigger job alone).
A basic trigger job down to a reasonable weight should more than suit your needs. A good gunsmith will focus on other things that are more important than the sheer weight of the trigger pull, such as how clean the trigger breaks, and reset.
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Oh, and new grips can completely change both the appearance and feel of the pistol. I run these, for what it's worth:
GR-G-19 - Mil-Tac G10 Grips - Grips - - Detail