Get the Yamaha HTR-5790 at Vanns for 449.88 free shipping. Here is a link, you will want a receiver that has seperate eq for each channel. I'm not sure on the Onkyo 702.
Yamaha 5790
http://www.vanns.com/shop/servlet/item/accessories/538799290
EDIT:: BTW, its a THX receiver and IMO it may be better than the 1015tx..
Also it has 9 speaker outs, you could still keep your 7.1 for your HT room, and use the 2 presence speakers on zone 2 for your patio. Here are the specs.....
The HTR-5790 delivers powerful 110 Watt x 7 channel sound. Discrete 7-channel amplification delivers high quality sound and YPAO (Yamaha Parametric Room Acoustic Optimizer) measures your room and automatically equalizes for the best sound.
Dolby Digital EX, Dolby Pro Logic IIx, DTS-ES Discrete 6.1, DTS Neo:6 and DTS 96/24
110 Watts x 7 (8 ohms, 20Hz - 20kHz)
HDTV Compatible Component Video Out (60MHz)
Digital Inputs (5 Optical/3 Coax) and 2 Optical Outputs
6-Channel Input
7 Video Inputs, 2 Outputs, 4 Audio Inputs, 2 Outputs, Front Digital Inputs
Quad-Field Cinema DSP, Virtual Cinema DSP
27 Surround Programs (47 Variations) with Silent Cinema
Learning LCD Remote Control
High Current Amplification
Direct Stereo Mode
Direct ToP-ART
Audio Delay for Adjusting Lip-Sync
New 32-Bit Yamaha LSI for Cinema DSP
THX Select Processing
Night Listening Mode
YPAO (Yamaha Parametric Room Acoustic Optimizer)
192kHz/24-Bit Digital-to-Analog Converters
Accurate Touch Volume Control
Component Video Up Conversion of S-Video/Composite Signals
9-Channel Speaker Output (Presence Speaker or Zone 2 Selection)
Pre-Outs for All Channels Including Subwoofer
Multi Sourced Zone 2 and Zone 3 Audio Outputs
Assignable + 12V Trigger Output
Main/Zone 2/Zone 3 Independent Power Control Command
IR Port
Extended IR Code Compatibility
40-Station AM/FM Preset Tuning
Speaker A/B and A+B Selection with Zone B Function
34.2 lbs.
17 1/8" x 6 3/4" x 17 1/16"
Yamaha HTR5790 Warranty Details
2 Years Parts and Labor