Just purchased my first Springfield

Won my first Springfield on gunbroker and looking forward to it. Anyone else have the XD-S 45 acp (not mod 2) and what is your opinion on it?

It’s used but pictures looked good and comes with a holster, mag holder and 7 magazines. Any other good accessories I could look for?

Plan to get extender base for each of the 5 round mag and thought maybe night sights eventually. Any trustworthy websites to order parts for the gun? Does mod 2 parts work for this gun?