Height of Vanitas and Xehanort

[Neo_]

My brother and I are enlisting a custom figure creator to make customs of Xehanort and Vanitas to scale with the Diamond Select figures; Sora is 5.5" and Axel is 6.5" for reference. I was thinking Vanitas is the same height as Sora, and Xehanort is either Axel's height or shorter? 6 or 6.5"?

We're not overly anal about it, but the price will be decently expensive so don't want to mess up; will probably post pictures once we get them.