Million dollar question. I wish there was an easy answer, but there are none. Setup depends on so many things such as track size, jumps, dirt consistency and driving style. Best I could suggest is something proven to work.
Pick your poison here.
https://lutzinator.com/setup-sheets/
Just keep in mind the Pro can drive an aggressively setup car and that will likely make most people slower. There is no substitute for track time and changes you test yourself for your track. I suggest you pick a setup and change it to your needs as you go. If you are lucky one of the tracks listed is one you race on or know about to compare with yours. I hope that helps get you started.
