When to separate layers and meat birds?

[Holmes' Homestead]

I'm receiving my first batch of pullets towards the end of May. I'm getting 10 broilers and 10 layers from Meyers. At what point should I separate them? I've read that you should keep them (layers) in the brooder up to 8 weeks, some people apparently even take them out sooner than that. But since the broilers grow so rapidly, I was wondering when you can take them from the brooder to the coop? This is my first year doing this. I'm excited and overwhelmed. My wife and I are taking a lot on this year, not only are we expanding our garden, but we're getting bees in April, and chickens the next month. I can't for the snow to melt so I can get to work on their coop.

Thanks for your suggestions