Yup, I just looked at my neighbor's 4 wheeler plow and you are right about the blower frame being stronger. I think you have the right idea on using an ATV plow. I'm going to be watching for a used one on Craigs List. I know it will do what I want.
You may beat me to the punch. Please keep me in the loop. I'm working on a rampage bike lift at the moment in the back of my truck. Hoping to get a vid sometime and post it on youtube. Built a frame as so to side the original frame of rampage out and over the tail gate.