How much room should allow in height to grow Sativa indoors?

I've only recently gotten into growing and grew Indica. I was curious if I would need to create more grow space to grow a more pure Sativa? I hear that when you flower Sativa early it still puts on considerable height?

dont be so concerned about the hight of the plant be more concerned about if you have enough light to penetrate the hight first. not enough tie it over. Lst.

if push come to shove you could always prune or use the bending method depending on your space