A:Answer Hi Andrew,
Are you referring to the external lighting controller that is included in the LS100 starter kit? If so, the controller supports up to 198 LEDs total for both RGB channels or 138 LEDs for one channel. The 250mm strips have 15 RGB LEDs, while the 450mm strips have 27 RGB LEDs. If you used six 250mm strips, the total number of LEDs would be 90, so your suggested configuration will work while still having spare headroom. If you have any additional questions, we'd be happy to help: support.corsair.com
-Albert