I don’t know what your budget is, but I’ve found when I’m getting to the point of final render, I send all my jobs to a render farm. It runs a lot faster and if you equate time to money, a lot cheaper.
I can’t imagine waiting 37 hours for a render to finish only to find artifacts or realize I used the wrong setting.
I’d love to have a 1070/1080 to speed things up during my initial work on a project but now that I’ve discovered the wonders of using a render farm, I don’t think I’d ever render locally unless it was a small project.