The below image is of my boyfriend and I. He is a max height miqo and I'm a min height viera. As you can see the height difference between us is quite small.

I think it's safe to say that some male viera will be able to be taller than at least some female viera because I don't imagine SE would give male viera a height range that matches male miqos because frankly they would just end up looking like a different type of miqo instead of something more distinct.

I don't know if male viera would be able to be as tall as a max height female but I figured I would show this image to give an idea as to what might happen with their height range.

Personally I would like if the males cannot be as tall as max height females. I know that among mammals in our animal kingdom it is rare for the females to be larger...but it does happen, and there's no reason why viera can't be an outlier in FFXIV's world. It would also make sense given viera have a matriarchal society. But if it turns out the males can be taller I won't lose sleep over it. I'm just so glad they're even coming to the game.