Sorry - which kit are you looking at? there are a number of them available and you don't include the link.

This is a better board to post your questions in.
https://3dprintboard.com/forumdispla...ers-(Hardware)

Personally, I have heard good things about the Creality Ender, but as I don't have one yet, I will leave it to the experts.

A heated bed is generally nice to make your prints stick better and can be necessary for some materials - you will heat them between 50-80c usually (for an idea of how hot the bed gets). The nozzle will get hotter of course so you will want to keep little hands away when in use.

It is not necessary to purchase one with an enclosure - you can build an enclosure yourself quite easily.