I have a JBL Powered Subwoofer 18" 5oo watt.....I want to build a stack to use for bigger venues. I would like to use the subwoofer too.... I was thinking about the Peavey Headliner 1000 - 1000-Watt Lightweight Bass Head, Ampeg 450 watt 15" speaker with horn, and the subwoofer. Think I am thinking crazy....??? Will the powered subwoofer mess me up....???