Subaru has a tongue weight
limit of 200 pounds. With a travel trailer you want the tongue weight to be 10-12% of the trailer's total weight, so that means you are limited to a 2000 pound travel trailer.
Also consider the gear you want to bring- bikes, kayaks,…- as well as a good-sized canine friend. It all adds to the weight.
I think you need to be looking for a fairly basic Scamp
13 or similar. A bathroom is nice if you stay in undeveloped campgrounds, but it does add weight and makes the already-small interior seem more confined (my opinion, anyway). Most no-bath 13'ers have a storage compartment for a porta-potty under the front sofa.
Scamp 13s generally weigh between 1500-2000 pounds loaded for camping, depending on options. Fully optioned (bathroom w/shower, AC furnace
, awning) and carrying the larger battery
and two propane
tanks in the tongue, it will be well over 200 pounds tongue weight. You'll need to be selective about your option choices.
You might also want to take a look at the Happier Camper HC1
. It's more expensive, but the rear hatch fits well with your outdoor sports oriented plans.