Breeding run?

Hey everyone,

So long story short we're starting over after a predator attack. I'm tearing down the old run and redoing it. We're going to make it a little bigger. I have about a 35'x35' space to play with and we want to have separate chambers for breeding purposes.

We've got Hmongs and backyard mixes we sell every year to cover the cost of feed and we're looking at adding a few more breeds to offer locally.

My question is to those of you who have breeding runs how have you done it?

I was planning on building the run, then sectioning off the interior with a bit of framing and doing chicken fencing to save on 4x4 posts and concrete, but in light of recent events I want to make everything as secure as possible. The perimeter fencing will be 4x4 posts and hardware cloth 2-4' deep with large rocks around the perimeter to discourage digging.

We'd be looking at doing 3-4 "sections" each with its own breed. Probably around 8-10 hens and 1 rooster per section.

Do I build the perimeter then section it off with 2x2 chicken fencing? or do I build every section as its own run?

Just trying to figure out the best way to go about it. Obviously I'm trying to keep cost down but also trying to prevent losing an entire flock in a single attack.