Hello, I am currently in the process of remodeling my backyard with a basketball court and patio area. I just finished purchasing a set of HF12 rock outdoor speakers - http://www.outdoorspeakerdepot.com/oshfulperosp1.html using 175W per speaker. I am looking for a solid receiver in the ~$100 price range to push these two speakers. I am not currently using a subwoofer but hope to be adding one soon. Although I will only be using two channels, I may add rear speakers and a center channel in the future so a 5.1 receiver would be ideal. Would a 5.1 receiver bridging the two extra channels work well? What receiver in the given price range would work best to power these speakers efficiently. Any input would be greatly appreciated, thank you!