How on Earth do you decide what light/holster to get? (P10 c)

Hey folks, so just got my first firearm a Cz p10 C. I really like it. Got it for $350. If you told me "take a look at this pistol, it's $600" I would believe you. Took it shooting a couple times already and it is great.

Now I want to get a light and holster and idk what to do. There are so many options on the market. Everyone here seems to suggest a TLR branded light. I just feel odd about getting a light thats like half the cost of the pistol, if that makes sense. Idk maybe I am being weird. But I want a light and a holster but idk how to choose. Is it better to get the light first and then find a holster? I want to get a CCW and conceal IWB appendix carry (unless you want to convince me otherwise). Doing some Googleing and there are many options. I don't want to buy a light and have it not fit a holster, and vice-versa. Do I just stomach the cost of the TLR or are there other options? I am just feeling overwhelmed with all the accessories out there. Thanks.