We are ordering new chicks as well. I opted not to vaccinate them because we have a flock of birds that were born here over the years and they never got vaccinated. Our flock never gets exposed to other birds. But thats my choice and it may not be right for you.I add apple cider vinegar with the mother to the water. ACV makes them healthy and stronger. If you can afford it get an electric fence for protection. I just replaced our old one because we had a weasel come in and wipe out 11 of our 20 chicks last week. My tester was broken so I trusted the red flashing light to say all was well. Tractor supply has a 2 mile plug in electric fence for $26 and the good digital tester is $40. If you get it make sure the fence has good grounding so whatever hits the fence gets a good ZAP