RE: sprayer set up?
Personaly I would use a 12volt set up. You can just use a simple on/off switch and mount it any where you want. I am making my own sprayer right now but it is only a 15 gallon model. It will work good for the power lines and trails that cross my property. I'm just waiting for the boom kit right now. I bought the metal and wheels and Ive only got about $110.00 in it. I'll post some pics when its done.
Good Luck