what seat post are you using?
Are you both using standard stems or are they riser?
the post is a Van Nicholas ti post (I have a ti 456 so went the whole hog), it’s 400 or 420mm long (not sure how much is showing, quite a lot, I do know it is bent now).
It’s a kona stem, not sure of model, not sure of rise to be honest but I do know I have probably over a cm’s worth of spacers. The bars have an inch rise. So, I’d recommend before cutting your steerer down experiment and see what feels right for you.