Good to hear it is flying fine.
With small drones I’d just keep an eye on how the strobe is mounted. Even if it is lightweight, placement can matter a bit if it shifts the balance or catches wind.
I’d do a few short test flights first, check hover stability, battery time, and make sure the strobe is secured well before doing longer night flights. Better to keep night flying simple and close until you know how the drone handles with the extra weight.