What face shape would this hairstyle suit.. and how would it be maintained?

I have a sort of cross between a diamond/round face shape. It’s not oval. Would this cut look good/okay on me? https://www.hairstylesdesign.com/gallery/medium_hairstyles_3551.php Also I’m wondering how you would maintain this kind of cut. I have pretty straight hair, but it’s thick and it takes shape easily. Would I need mousse? …