I would suggest for you to look for used equipment. Sundown amps and speakers can be found with some searching around for cheaper than new. Just invest some time in the background of the guy selling the stuff. You can also get on a pre-order from Sundown. Or b-stock sa-8's for 85 each. I say leave the Optima you have now and see how your voltage is hanging. It depends on you listening habits, if you like to bang it for longer periods and the voltage gets pretty low you will obviously need to invest in a better, larger battery. Check this thread out, because I saw you were wondering what battery to get for the according wattage. Make sure it fits too. http://www.soundsolu...tery-do-i-need/ and this http://www.soundsolu...ries-different/