Did you run Audyssey? What did that set the speakers to? Do run the setup as a starting point with multiple First Rounds to set the Sub in -5 to +5 range. Proceed to next positions after the sub has been set. Most probably Audyssey would set these speakers to Small. So leave that setting as is. Cross over for these speakers, I would personally have a floor set at 120 and slowly go higher to have the right handover with the Sub.
BTW, the speakers look awesome. Where did you pick them up from and for how much?
MaSh