FYI, you'll get more response if you start your own thread. New threads are what keep the conversation perking along on BYC, so don't be shy about doing so! Your chicks are at an age where you can be turning the heat lamp off for increasingly long periods of time during the day. Do you have...
Many of us are finding that it's actually easier to integrate youngsters when they are younger, instead of waiting until they are close to full sized. When they are chicks, the older birds don't consider them to be a threat to the pecking order. So, if the flock has plenty of room in the run...