I am interested in buying a new straight truck for my wife and I to operate. I am curious to know, is it better to get a tractor and stretch it out?If so how much does it cost?The location doesn't really matter because I would take it to the best place. I'm also curious to know how much is the down payment for straight trucks already built. Also what is a good monthly payment. I'm kind of young and I don't want the dealer to get over on me.Please give me some advice.thanks.