Welcome,
Are you set on getting the RSX-4 or open to other suggestions? If you are open what price range are you looking at? Would you like to get everything once of a few speakers at a time to build your 5.0 setup then your 7.0? I only ask because the RSX-4 speaker can only be mounted from the bottom, so to wall mount them might be a little difficult to get the sound where you want it.
If you do get the RC-52 then you can get the matching RB-51, http://www.klipsch.com/products/details/rb-51.aspx, or the RB-61, http://www.klipsch.com/products/details/rb-61.aspx. They both have keyhole brackets on the back to mount directly on the wall.
James
Everything. OK! I'll talk! In third grade, I cheated on my history exam. In fourth grade, I stole my uncle Max's toupee and I glued it on my face when I was Moses in my Hebrew School play. In fifth grade, I knocked my sister Edie down the stairs and I blamed it on the dog... When my mom sent me to the summer camp for fat kids and then they served lunch I got nuts and I pigged out and they kicked me out... But the worst thing I ever done - I mixed a pot of fake puke at home and then I went to this movie theater, hid the puke in my jacket, climbed up to the balcony and then, t-t-then, I made a noise like this: hua-hua-hua-huaaaaaaa - and then I dumped it over the side, all over the people in the audience. And then, this was horrible, all the people started getting sick and throwing up all over each other. I never felt so bad in my entire life. - "Chunk" / The Goonies