Since you haven't purchased a trailer yet, may I suggest you educate yourself about your tow vehicle's capacity and learn just how much trailer you can pul with it. The #1 mistake we see here (almost daily!) is someone who purchases far to heavy a trailer for their tow vehicle. If you are not familair with the terms GCWR, GVWR, Max Tow Rating, etc., now is the time to learn. See RVForum Glossary
Here are some previous diuscussions you may find helpful. I located them using the SEARCH function and the keywords GCWR and trailer.