These are some pretty good numbers, actually - assuming they are going with -3dB as their gauge for the frequency response range, we can take those low figures (80Hz for the LCR and HCC, 125Hz for the SUR) and determine crossover points. I'd look at 100Hz or the fronts and center and 150Hz for the surrounds as a starting point. You might consider trying 80Hz for the fronts and centers and 120Hz for the surrounds just to see how it compares.