Any new polymer pistols I buy will automatically get Talon Grips first thing. Then I shoot it a while before I decide on any changes. Get some extra mags and ammo and that’s about it.
I buy more mags. Then I hit the range. I usually have plenty of ammo.
And for the most part, I am done if I already have a holster that fits it. Otherwise, I get one of those, then I am done.