I have a 2015 Frontier Pro 4x. I have two four wheelers and the wife wants to get a sxs. I was thinking about getting a 18' car hauler trailer. Size wise to works if I load the two four wheelers side ways. I am looking at 1900 pound trailer and 2500 pounds of toys and gear. Well under tow rating. Trailer is rate for 7000 pounds. Any suggestions on what I will need for a hitch set up. By loading it right I should be able to keep my tongue weight around 400#.