I have a 2012 Roo 19 hybrid. Dry wt is 3383lbs. GVWR is 4770. My actual wt (just wife and I) is 4000 lbs or less. I towed it my first season with a 2011 Chevy Traverse, 3.6L V6, 281 hp, 266lb-ft torque, 6spd automatic. (5200 lb tow capacity.)
I wasn't happy. It ran in 4th gear on flat and level most of the time, ~3100 rpm at 60 mph. Any slight increase in in incline would drop it into 3rd. Declines would let it go to 5th, but I don't think I ever saw it in 6th. Got 10 mpg. But I really wasn't happy running in 4th gear all the time, and dropping to 3rd lots of times. I don't think the issue is the weight so much as the drag.
I bought at 2009 Silverado (7500 lb tow capacity), see stats below. Still getting 10 mpg, but I'm MUCH happier.
My 2012 brochure says the 2012 Mini Lite 2304 is 3717 lb dry, GVWR 4951 lbs. That's just a bit heavier than mine. If I were you, I'd make sure whatever you buy has a V8.
1988 Coleman Sequoia - popup (1987-2007)
2012 Roo19 - hybid (2012-2015)
2016 Mini Lite 2503S - tt (2015 - ???)
2011 Traverse LT, 3.6L, FWD
2009 Silverado Ext Cab, 5.3L, 4x4, 3.73
2016 Silverado 2500HD Dbl Cab, 6.0L 4x4, 4.10