Yes for sure, keep your heirloom plants far enough away from each other, that is what I thought might be your thinking.
And perhaps, just maybe, you could send a few Purple Cherokee seeds my way if just end up with enough???
I love having chickens. 60 is a lot, I am down to 14 now I think. I can still sell any eggs we don't need.
Enjoy your gardens and keep the pics coming!