You can move them out now, but hang on a bit before letting them mingle with the older flock members. If possible, partition off a section of the coop and/or run for them to stay in, separate, but within sight, for a few weeks while they adapt to being outside full time and get to know the older...
I moved my first ever batch of chicks out when they were barely a week old. BUT it was summer and our summers were hot. Even nighttime temperatures were around 80*-90*F. Move your chicks out to the coop and watch their behaviour when it gets cool. (Do not let them see you. They will yell their...