That's similar to my plan, right now I have 3 hens, that will be 3years this spring. Our town has a 5 hen limit, so I'm waiting to add a couple more when my girls slow down on laying. I know eventually, I'll just be running a retirement home, but that's OK, they're pets for me, the eggs are just a wonderful bonus. Integration is my biggest worry, but things went smoothly when I added my 3rd hen, because I gave them plenty of time. Hoping that works as well next time. I'll not be adding chicks though, because I need to be sure I don't get a roo by mistake.I've been wondering if it would be a good idea to build a small flock 2 at a time for a few years. I have four hens now which is a good number for my little household but I've been thinking: eventually they will all stop laying and I will just have a retirement home for four hens.