Being new to guns… and starting with a Performance Center is about as good as it gets… congrats on your purchase!
I don't want to make recommendations, but I will offer some suggestions. A good gun smith is worth the fee they charge… they have the tools, and the experience. I usually pay between 40-90 dollars for sight work. IMHO, worth every dollar!
Fixed sights are as good… as they have been set into the slide. Usually, the only issue that you might encounter is shooting low, or high. A good plan of action, is to shoot bench rested at 20-25 yards, 300+ rounds to get a good sense that rounds are hitting POA (point of aim) If you sights alignment is good, then POA can be addressed with a higher/lower front sight, to insure POI (point of impact).
I use "Dawson Precision" and "XS Sights" Novak is another option.
If you are thinking about adjustable rear and fiber front, then Novak is a good option (you should call them and fully discuss your needs) The reason, the Slide is not already "notched" for a standard adjustable rear sight. So you would need a "matched" pair (front, rear)
If you are thinking about just a Front sight, Dawson is a good option (you should call them and fully discuss your needs), this is the route I will be taking…
Again, let me be sure you don't misunderstand, you really need to shoot bench rested to confirm your POA-POI is consistent, and measured. This way, if your high/low you can pick the proper front sight height. My M&P Pro 9mm shoots 2-3 inches low at 15-20 yards... drives me nuts!
One final comment, spend some time looking at sights (Dawson, Novak) but definitely give them a call… these folks love to talk guns and help get you setup right! Have shipped just the "slides" never had an issue… they have always come back perfect.
bn.