I have a 2013 Rubicon unlimited with the premium alpine audio and nav screen. I want better sound and i was on craigslist and i saw JL ZR speaker/component system selling for $200 so i decided to pull the trigger on it because it was so much lower than retail price. I want to change out my speakers, add a sub, and two amps possibly, but want to keep the factory HU. I have around $1000 to spend on this setup(JL ZR already subtracted from that total), what do yall think i should do? Install the speakers, add an amp for those speakers, get a sub and an amp? Any Suggestions please! Help!