I have 2006 crew cab limited with the jbl system. It’s time to upgrade. I want Bluetooth, backup camera, head unit and speakers minimum. I don’t not need huge volume (no sub woofer), just clear sound that I can turn up occasionally. So I don’t need an amp if the din can output enough. I am an audio idiot and want to stay below 500$ if able. What harnesses and components does this community rich in knowledge have for me? Feed me knowledge please.