Fantastic idea!
I love both of those women, they're great.
When it comes to fighting, I think Gal Gadot should win. She's bigger and stronger, she also has some boxing experience.

But I think that Emma will fight well and it wouldn't be a completely one-sided match.
The type of match-up I'll be writing is a kickboxing match taking place of a private beach. It will be in a ring with protective gloves and a referee so the things don't get to heated. I hope you approve my decision and if you have any questions or anything to add, feel free to let me know.
I love kickboxing-type matches. I think it's perfect for women with good figures and it's very versatile and dignified way to fight.
I'm sure you'll write a great story!