I would go with LLC but thats my $.02. As far as how I just went to the place I take my taxes and let them deal with the paperwork.
1997 Ram 1500
2005 Ram 2500 HO Cummins
1997 Wells Cargo 6x12 enclosed trailer
2014 K&K 20ft landscape trailer
2013 x739 4x4 with 54in HC deck / 60in HD Broom
2010 Toro Grandstand 48in