I'm trying to add some surround speakers to my setup on a budget and needed some advice. My room is fairly small (guessing about 15'x15'). I have connected neighbors on each side, so I'll never be blaring this thing. I use it for both movies and music. This is my den, not a dedicated home theater room, so I can't move furniture to ideal locations, and I'd prefer for my surround speakers to be as least noticeable as possible.
Denon AVR-2112ci (iPad AirPlay music)
DirecTV satellite box (TV)
PS3 (movies and games)
I currently have 2 floor speakers (Pioneer SP-FS51-LR) and a center (not sure but it's an Infinity and looks a lot like the PC251BK). No sub as they are expensive and I don't want to irritate my neighbors. No surrounds but that's what I'd like to add. The idea is just to pick up some of those fun background sounds in movies and games, doesn't have to be spectacular.
I have NO idea where to start. bookshelves vs satellites? are there wireless surrounds reasonably priced? Am I stupid to add surround speakers with my already ragtag setup? Should I buy used or new? Can I do this for under $300?
Thanks everyone in advance for your help.