When you flower a clone it will most likely be sexually mature and spend less time vegging once put into flower. Seedlings are rarely sexually mature and are put into flower early because of height restrictions.
So I vote clones not to mention they are all females.
Once a clone is removed from the 'clone dome' and hardened off, you can flower her. The difference between seeds and clones is probably 3 weeks, meaning clones probably save you at least 3 weeks.