I’m in florida all though it is cooler out I tried to move them outside it was about 80 degrees and they are probably 5 weeks old
I’m adding two chicks at this point they are about 5 or 6 weeks old. The coop outside is 20ft long by 9 ft wide and is currently occupied by 5 hens and a rooster
When most people hear this question (how-long-before-chicks-can-be-moved-outside) they assume the question is about temperature hardiness. This isn't the case for you as you are in FL with 5 wk. chicks. I just moved 5 week old chicks out at 40F.
Your problem is integration. The best answer is when they are the same size and same number as your adults. It is all about the established flock. Your mature birds view the chicks as a threat to the health of the flock. In their chicken brain, the interlopers will compete for food, water and possibly bring in disease. The fact that they are so small makes them very easy to brutalize. They want to drive them away or kill them. Keep this in mind as you determine integration methods.
Is there anyplace else outside you can raise them up till they are closer to the same size?
It is all about the available space as well. I have some success when all are free ranging. However, chickens need to have several days orienting themselves to their surroundings before free ranging and while they are imprinting on the coop as a safe place to sleep.