Is this kit worth it or should I just get everything separate
Sigelei ZMAX V3 Telescope OLED Ultimate Kit
Kits aren't necessarily "bad", they have the benefit of having all sorts of goodies and are a "one-stop-shop". But they also have the risk of ending up with things that you don't want, may not need or like, or that are less than optimal.
What you get:
Sigelei ZMAX V3 Telescope Oled complete body, telescope and endcap.
One extra end cap.
Trustfire Dual Battery Charger for 18350 and 18650 Batteries with USA plug.
TWO 3400mah Panasonic NCR18650B Batteries
One 800mah Efest 18350 Battery for short mode.
One complete Protank II Kit (protank II, cone, gasket, and two coils).
One extra replacement base for Protank.
One Stainless Evod.
5 Pack of replacement Kanger evod coils.
I've underlined the two items that I wouldn't want in the kit. The head/delivery devices are more a matter of personal preference and usage, and so it would be "perfect for some, useless for others".
However, that charger and those batteries (which I underlined) are not.... highly regarded or the best choice for this application. The batteries "Panasonic NCR18650B" (and again, I would defer to our local battery-gurus) are not "high discharge batteries" and are less than optimal and typically not recommended by our resident experts.
The charger, "Trustfire Dual Battery Charger" is generally seen as a low-end and is not highly recommended by many in the community or our battery-experts.
That's the risk of a kit. It may be an "all in one" purchase, but it's the vendor who decides what you get. It is completely possible to shop around (once you have built a list of items that have better reputations and are more highly regarded) and put together your own kit (even if you're making separate purchases) and for the same amount of money (or even less) get something better and no additional items that you're not going to use or like.