I think they'll be as expected. Using the cm measurements I imagine around 173-188, but I think a higher variation in height like 160-200 will satisfy many more people if it was possible. Also please note Balthier is also 183 and he's another adult character, then consider subtracting the height of heels and while tall they're definitely not abnormally tall as a tree.

So it wouldn't be surprising to see their height is pretty average, while tall on average for hume standards. If there was a justification for extended height range I would think it would be their heels which they sometimes don't wear, see dancer.

Anyroads, I expect female highlander height but can see justification for more variation. We'll just have to wait and see, or wildly speculate, I guess we can do that too.