First off, welcome to the JOF! The folks on here are great at helping folks solve their RV'ing problems and at answering their questions. As suggested, if you'll post your tow vehicle make, model, and year, we'll be able to look up the specs on it to better advise you. That being said, I'd agree that the J-Series Sport might be the perfect option for you: loaded weight is well under your max; low profile for less wind resistance/easier towing/better mpg; easier set-up than a pop-up, and they're hard sided for better heat retention in cooler weather, and added security when over-nighting in rest stops, Walmarts, etc. Besides that, they're cuter than Hell!
My first trailer was an ultralight that I pulled with a Mazda Tribute V-6 (like a Ford Escape). Traveled around Michigan's U.P. and even drove it from Michigan to Nebraska a couple of times. Let me tell you, pulling it with that light a vehicle was a lot of work - and wind/passing semi's made it difficult to keep it on the road. After 2 years, I traded the Tribute in on a Ford Ranger pick-up with H.D. Tow Package, and it made a world of difference! I would NOT
recommend towing a high profile trailer with anything less!
More info = better advise. Good luck with your decision! and Happy Camping!