OK, I completely screwed up the chicks arrivals. I have 6 here now and 10 more coming "later." There is no room anywhere for a second brooder. If the 10 arrive in 2+ weeks can I keep them all in the same brooder? Should I keep the original 6 at 95 degrees until the the rest arrive? Will it be OK to mix them safely with a 2+ week difference in age? Thanks!