Hey Hemi guy, I think you really need to consider what the GVWR minmum requirements are to pull a 30'trailer with a car and tools in it are. That will put you on the right search path for specific vehicles that meet that requirement. Then it will be all the other tings the other responders have suggested.
Remeber, there are a lot of the rest of us on the road with you and we need you to be able to control and stop that rig too.