yea I AGREE with growspace and meofcourse if u only have 5-6 feet...
flower them now if not done so already.. they will double and maybe triple in size
depending on the genetics i usually wait tyll my girls are 8-12inchs to flower.
and they end up 4-5 feet. so i think u gunna have big girlz when harvest.(Y)
if u have the room u have no prob if not u may want to top them before put in flower.