Bi-amping overkill?

I suspect you will enjoy an improvement. First the the eq will probably correct the largest abberations. Secondly the "top" amp which provides the power for the frequencies that our ears are most sensitive to and will probably need the least manipulation will not be "corrupted" by the eq, and because this less demanding load will probably be riding in class A longer it may further enhance the sound. BTW, I don't necessarily believe that the eq actually corrupts anything, but, there is a vaid argument that suggests that amalgamting the primary first sound with the corrected reflective sound introduces a new perhaps more disruptive distortion. I have neither the knowlege of the experience to settle that argument. That most rooms suffer their greatest abberations in the lower frequencies seems to be universaly accepted. Furthermore it seems to be just as accepted that due to the nature of lower frequencies it would be difficult to seperate the primary sounds from the secondary reflected ones, so the net sound should benefit from eq manipulation. All in all, I suspect the compromise in cabling will be worth it.