Your camper will have electric brakes, you'll need the controller.
When you fill your propane tanks on the tongue of your camper, plus the weight of the battery, your tongue will be much heavier than the weigh the manufacturer gives with nothing on the tongue. Their weight is a dry, empty weight. So expect something more like that 800 pound figure.
Your 1500 will squat in the back if you do not have some kind of Weight Distribution. The Reese version will work. It will distribute the weight of the tongue to all 4 tires of the tow vehicle. Is it the "best"... well ... that's really a matter of opinion. I had a standard chain style Reese for years and years, never had any problems at all, and I towed a 31 foot TT.
Then one day realized the hitch head was bent, and ended up getting the Equal-i-zer 4 point. As far as performance between trailer and truck.... I didn't see any at all. BUT the ease of hitching is much easier.
So, I don't know if the old Reese hitch head was just getting old, or if it was just bearing too much weight with the Outback? I'll never know. I do know the Equal-i-zer 4 point, has the built in sway, no need for the extra sway bar with my Reese.
And talking about sway ... finding out you need sway (later) is NOT the time to make a decision to get sway control! If you find out you need sway control, chances are, it will be too late to get it, it won't be of any benefit, because your camper will probably be laying on it side in the ditch on the side of road and you'll be scratching your head wondering what just happened. THE TIME TO GET THE SWAY FEATURE (WHATEVER KIND OF WD YOU GET) IS THE EVERY TIME YOU HITCH UP! EVERY! That means the very first time you tow it! You cannot afford to "test it out" first. By then, it will be too late.
Of the 2, Reese and Equal-i-zer, I like the Equal-i-zer much more!