Star Wars Babies

In 2018 Disney will release a film about Hans Solo's early days.  Alden Ehrenreich will play Han and Donald Glover will play Lando Calrissian.

Here are some numbers (according to the IMDb):

Harrison Ford:  6' 1"

Billy Dee William:  6'

Alden Ehrenreich:  5' 8"

Donald Glover:  5' 9"

I know this won't matter, thanks to the magic of movies, but I just want to be sure--they'll be adults in this film, right? I mean, not teenagers who are still growing.