I'm afraid I know nothing about FPs.

If you were to opt for three identical towers across the front you would deploy them all vertically. I have not tried this but conventional wisdom is that such a setup will give you a great, perfectly matched front soundstage. Some of these other guys may have some first hand experience with such setups - wait and see what they have to say.

You could always head over to Streem.com and get some of those beauties!