4 Atrium8 SDI's & Suggested Network Receiver or Other Route

Hi,
I have 4 Atrium8 SDI speakers along with a pair of Pro Audio Eminence LA12850 subs. This is for a patio layout. Looking for advice for the correct options for power for the 4 Atrium8s. I am considering the HK 3770 to drive the 4 Atrium8's but wanted to get some advice as to what others may see as a better option. I am looking for a networked receiver for connectivity to iphone/ipad or whatever. Source wise, I am only looking to send other audio from a TV.

Any other good Network Receiver Options? The Onkyo TX8270 and Yamaha N303 are not enough power. I plan to drive the 2 mounted subs with a QSC GX5 and considered using a QSC GX3 to drive the 4 Atrium8s and utilizing a sonos port for network connectivity.

Any help would be appreciated. Thanks!