I have a 2008 Grand Cherokee Laredo base model. I am looking to install a sub and possibly a second amp for the speakers to the factory radio.

Here is what I have to use:
3- 2 Channel Amps around 250Watts
1- 10 inch Sub
Auxiliary input adapter
External Volume control bypass for sub
All the needed wiring.

How can I make the most use out of these and what is the best way to install it all.