Hi guys, I am expecting some silkie eggs to arrive tomorrow. I only ordered 6+eggs. Now I am worrying about ending up with a single chick. This is only my second hatch and the first one was only a 30% hatch. So I am wondering how late after setting these 6 eggs could I add additional eggs. I am thinking of ordering more but they would be hatching on diffeent days. Any advice? I only have one bator.