Ender 3 V2 upgrades and addons
IMHO, it's probably better to get the printer as-is first. This way you can get familiar with the printer and 3D printing in general before you get overwhelmed with all the extra introduced variables from your upgrades.
The new model already has loads of features that were considered upgrades on the older model and you can already get very nice results.
Upgrading your printer is a part of the 3D printing hobby, and you'll probably never be done with it :)