Since 2 of our chicks turned out to be roos, I am left with 2 red sex links and 2 SLW. There are 5 of us and just want them for our family. Would you add two more laying hens into this flock or leave as is? if I were to add two laying hens should I wait til my other girls are laying...they are 19 wks, or add them now? Thank you!!