Yes, the Curt Hitch part # 13323 that you referenced has been confirmed to fit all models of the 2015 Toyota Tacoma so it would fit yours. I attached an install video for this product for you to check out as well.
For trailer wiring you would want the part # C55513.
For ball mounts I recommend the etrailer Ball Mount Kit # 989900. It comes with 2 ball mounts, 2 balls, a hitch pin with clip, and a carrying bag. view full answer...
You can replace the metal cable of your Superwinch Terra 45 winch with a synthetic rope. I confirmed this with my contact at Superwinch.
The part number for the rope is in the process of being added to our site. When it is available it will be part # SW87-42613. view full answer...