Thanks. Allow me to press a bit further: will embedding the monitors ("softit") eliminate the bass response issue altogether?The high cut-off means you're much less likely to have catastrophic room interactions in the deep bass so you can place your mains where they image best. You can fill in the missing deep bass with a sub. It's a good compromise.
I believe that should take care of cancellations and nulls in the lower region. But I might be wrong.