Outdoor Home Theatre with 7.1 Surround Sound

Hello, Im trying to build an outdoor Home Theatre , maybe 30 to 50 guests, but I cannot think in the speaker / amp / layout with good balance and neighbour friendly.

Surround processor: Classe SSP 800
Projection: Epson PowerLite L615U with a 235 inch Elite Screen

I was thinking in getting

LRC : 3 x speakers Yamaha DXR8 (XLR connected directly to Classe)
Sub: 1x Yamaha DXS12MKII ((XLR connected directly to Classe)
Surrounds: 8 x TIC GS3 8" ( working as 4 channels )
Amp for Surround: Sunfire or Crown

Hope someone has ideas of a better balanced set of outdoor speakers and amp to get nice sound. If surrounds are all weather even better so I dont have to move them arround.

Thanks