My 60x20x9 ft room is used as a family room with an informal dining area, and yes, there is a kitchen at one end. The four M80ti's and the VP150 (and the EP600) fill it up with sound very nicely! I did not have high expectations with the Denon 3805, but I have been pleasantly surprised with the power of the amplifiers to drive four 4-ohm and one 6-ohm speaker. The 3805 has never become too hot to touch!
Eventually I plan to get a separate amp for the speakers and use the Denon 3805 as a pre-amp/pro only.
4 M80s/VP150/EP600/Denon AVR-5308 & DVD-2910/
2 QSC SRA3622(1100wattsX2)/Carvin 1800HD(600wattsX2)