I have read the manual for this unit and just want to make sure I can do what I want to do. The RX-V2700 and the rest of my HT system will be installed in the living room. I want to install speakers outdoors on my covered patio. It looks like I should connect them to the SP2 terminals and then configure the zone 2 output to use the internal amp. Having done that, can I control the volume and the source independently from the main channels in the living room? Should I install a volume control pad on the patio, or use the supplied remote?