2008 Sahara radio upgrade

[Black Bear Jeep (Dan44)]

Hello everybody. I own a 2008 Sahara with the Infinity sound system with the subwoofer. The radio works fine, but I want to add a GPS and backup camera without totally cluttering up my dash.
What options do I have to get the GPS and backup camera without spending $1000 on Crutchfield. I see radios on eBay pulled from wrecks, not touch screen but have the GPS, but no camera. And Amazon has lots to choose from, but fail to mention is that they support the subwoofer.
I desire a volume knob, as I can find that in the dark without having to look for a volume control.
If you have upgraded your JK/U, let me know what you did and how well does it work.

Thanks

Dan

 

[Cimmerian]

Trail Seven has the easiest plug and play kits but their cheapest one is about $700.

As someone who's done their own installation, I wish I had known about them before because I absolutely hate doing wiring.