I've got an idea for what I'd like to do in the backyard, but I'm not sure of the best way to go about it. I'd like to permanently mount two speakers on my covered patio and two more on the pergola across the yard. Connecting them to power shouldn't be too difficult. Running all four to an amp would definitely be trickier. And I'd like to play spotify on them via phone/iPad/computer. Any suggestions on setup or specific speakers? Thanks nerdery.