a secondary system for air tools is a must. I could work out of the back of my truck, being the whole idea

 

how big of a tank would i need to be able to run air tools enough to work on something? cause i would like to have that also.

 

its not the size of the tank 100%, you need a compressor that can keep up too.
check out that powerplant from warn, its a winch with a compressor and its had good reviews. build something equiv to that n you aughta be happy.