Kid, as the other replies have indicated, relax; you've got excellent equipment and it'll sound significantly better than your old setup. However, it's complicated enough that you can't just plug it in and get the best results. Study the instructions, especially the ones for calibrating speaker levels and distances. Your RX-Z1 is a fine receiver and you certainly don't need to replace it, but one feature that it doesn't have is automatic calibration, which can do the job simply and accurately. So, you'll have to calibrate manually and do it by ear unless you get a sound level meter, which probably will be a little more accurate than your ears. You already have everything you need for great sound(including the speaker wire)so set it up right, play good material, and enjoy.
