next project...rear plow

I have a plow on my truck, it draws a lot of power. Two batteries. Chevy 1/2 ton. Guessing 100 amp alternator. Been on the truck 8 years.
I use 1 run of welding cable to rear battery and heavy grounds to frame. Having a rear mounted plow has always been on my mind, plowing in reverse. Too much expense, time and abuse to make a rear plow worthwhile.