Same sound from 4- MB8's as the 3 some set up?

I have a new Malibu 247 on order and I am looking for a good tower set up, my concern is the head room. I know that I would have to duck under, however my question is if I mounted 4 MB8's on the side will they sound as good as the 3 some set up? They would both have adequate power either way.
Thanks for the help.