What I think in this situation that you face the problem where you only need one crossover point for your bi-amplification and you have I believe much more than that in your speakers.
-- What has to be done in this situation?
-- What will be result if the "rest of drivers" will be driven with no crossover?
-- Will impedance change take place in this case?
-- What has to be done in this situation?
-- What will be result if the "rest of drivers" will be driven with no crossover?
-- Will impedance change take place in this case?