I'm very much a novice when it comes to audio. I'm wanting to set up a couple of speakers on our new outdoor patio. It's a 40' x 16' space. I would like to get two speakers and would love to be able to control with my iPhone. Also, if I can set it up to my indoor receiver would that be a better sound? I have a Pioneer VSX-521. If you really want to help me out, any recommendation for indoor surround sound speakers to go with this receiver? Any help at all would be very appreciated. Thanks!!