Bhill

I have bought mh 721 and plan on doing vinyl for race cars , lettering , numbers , etc, I got some software with unit but doesn't seem to have all that much, what software do you guys recommend for my needs? Also how do you cut somethings that are say 3 feet in length as to just one page when I open to create it seems as if I have to create something that would only fit on a piece of paper....... Newbie. Thanks