Jason,
Your room looks nice! I recognize your name from somewhere... maybe db.etree or something like that. Welcome!
The speaker wire length vs IC length debate has been discussed. There is some info here in the forums here if you look around a little. I think most people lean toward long ICs and short speaker cables, but when this is discussed they're talking about really long runs. Your situation, with 3' of IC and 8' of speaker cable, is "normal" in my opinion. Most systems with two channel amps wouldn't have shorter runs. I don't think you have anything to worry about, but the only way to know if there could be an improvement would be to try it!