Best way to hook up 5 channel amp?

5 channel amp, components in the front, 6x9s in the rear deck, and a 10 inch sub. best way to hook everything up and run all wires. the amp is 65wattsx4 4ohms with 150 watts to the sub. where is the best place to mount the amp and run all wires in a 2000 pontiac grand prix gtp 4 door?