So Red, now that I caught up. I had so many comments and cheers I wanted to share but just couldn't. I'm past goin today. I wanted to mention your tractor idea. It sounded great! I wanted to mention though, and anybody else feel free to correct me: The suggested dimensions: For LF coop, the minimum, like someone posted is 4 sq ft. That's a 2X2 square. For the run, it's a 5X5 square per bird. 2 ft per bird for roost.
For the smaller birds, you can pack them in tighter.
Heat:LF have a larger body mass and I can't imagine them needing heat in your climate. The little birds, IMHO, if they're not densely feathered, if they don't have plenty of coop-mates to cuddle with, if the temp drops suddenly, I personally would supply a heat source. I'm not a fan of lamps. A pig mat on a wall, A Lectro-mat, an oil heater for a large coop. Just sayin.