well im about to start a pressure washing business from scratch. i have a trailer and about to get a 200 or so gal. tank for free from my work hopefully. and need some direction to which washer is a good one to get going. i plan on doing houses, scrubing vinyl siding, driveways, decks, roofs ect. nothing huge yet. i think im going with at least a 3000psi washer but dont know about pumps or gpm, im looking at spending no more than 1000ish. also would i need a business liscense or what? im going in a dark room blind. any help would be appreciated.