My room is 17X18'...

I use to have M60's + VP-180.. Now i have LFR's + VP-180... I also have dual EP600's... So, keep my perspective in mind when reading my answer below.

I sit 13' away from my speakers, and they are toe'ed in about 10 degrees... Toe in is one of the variables that changes with each situation...

Start reading at about page 17... i think you will find it quite enlightening...
http://www.wilsonaudio.com/pdf/manual_soph3.pdf


Oh and to answer your question....


Would towers be over kill.... Heck no!..