The more important issue will be the maximum hitch weight allowed for your SUV, probably 350 lbs. Figure that most trailers' tongues in that size range will weigh
about 100 lbs more than the quoted dry hitch weight by the time you add the LP tank, battery, and normal cargo. So you're looking for a TT with a max dry hitch of 250 lbs. That means your TT will probably have to weigh no more than about 2000 to 2400 lbs.
Have a look at the Escape (of Chilliwack, BC) 17 foot trailer.
http://escapetrailer.com/trailers/the-17-foot-escape/ Not sure how much bed space you need, but this should tow nicely behind your SUV. I know several folks towing this with a Toyota Rav4.
Another possibility is a Taylor Coach trailer. They will have more frontal area than the rounded Escape, but I've heard that the Taylors are well made and you can see from their specs that they are lightweight plus light on the hitch.