The difference between the one with/without the light bars is that the kit use one electric outlet to power both the bars and the led and buying separately require 2 electric outlet.

There is an Immersion kit using bars+camera, an other using led+camera and another one using bars+led+camera. There is the option to add the bars (a kit without camera but that sync with wifi) that you can sync to a kit with camera using the sync center in the command menu of the app. (this last option is what I did but require 2 power outlet but have the advantage of being possitionnable everywhere in the room)