Charlie has the right idea. And.... if you want to look at something else, try the DefTech Pro Cinema systems. You already have the sub, so youre set.
I just listened to them this past weekend actually and they are decent little speakers

And I'm not just saying that because I'm a Defintive fanatic, LOL
Please, stay away from Bose. Like all things though, let YOUR ears be the judge, not our opinions.
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Play it LoUd!!