The lighthouse deck is released in early access which means that there is a couple of limitation you should be aware of:
It is currently required to hard-code the base station position in the firmware. This means that you need to re-flash your Crazyflies each time you move the basestations. This will be solved in the future by first allowing to upload the basestation position with the radio and then by estimating the base-station position directly from within the Crazyflie.
Since the deck only has horizontal sensors, the angle at which the base-stations are seen cannot be too shallow. This means that you should fly at least 40cm bellow the base-stations and that the base-stations should be placed above the flight space. This is a hardware limitation of the current deck.
The Crazyflie currently only supports Vive base station V1. Base station V1 are limited to two base-station per system. Base-station V2 does not have this limitation and so allows to cover much larger space. Support for the base station V2 is currently being worked-on and should be available in a future firmware update.