I am curious to know why you eliminated the Chaser from consideration. I weighed mine dry with the Eezi-awn 1800 tent and Engel MT45 fridge onboard. It weighed 1480 lbs which is well below what the Subaru is rated to tow. It has trailer brakes.
I just towed mine from Kansas through Tennessee to Virgina behind a 2006 Honda CR-V. Because I was moving, I removed the tent and fridge to use the trailer as a utility trailer. I filled it with about 600 lbs of assorted household stuff and the CR-V pulled it just fine. Granted it was never off road, but the CR-V would not be my first choice in an off road vehicle anyways. The only issue was that the tongue was a little heavy. That could be rectified by not using the dual battery setup that I have.
Based on my experience, I would think that the Subaru would have no issues with towing the Chaser.
Cheers,