Thanks all! I appreciate the feedback.
Some responses/more details.
NiftyChicken, when buying the plans, I was requested not to post detailed in-progress pictures, so I didn't take any. I think that's fair enough. The plans are a total bargain - only $20, VERY detailed, full material and cut list, lots of pictures and literally step-by-step instructions. I'd recommend them to anyone. I'm a weekend warrior DIY woman and completed the entire project solo.
www.thegardencoop.com.
The raised bed location was an idea I picked up when on the Tour de Coops in Portland. One guy had an a-frame style coop built to suit his beds. I preferred the look of this coop though, and was able to make it fit with very minor adjustments in length and width.
CityChook, the coop is fully enclosed with hardware cloth or siding, with the exception of the open bottom. The coop itself is open (with the hardware cloth stapled to it) at the top for ventilation.
NurseDr, that roost is about 2 feet from the floor in my coop. You could put a ladder there instead or in addition to, but I know my birds can fly to the top of the 2' brooder already, so shouldn't have any trouble hopping up there. So far they've only done field trips in the coop but will move out there this weekend. I've seen them come out the pop door onto the roost and jump down, but haven't yet seen them make the return trip.
I will take some "before" pictures of the soil in the adjacent bed, which is exactly the same as the one I've got the coop on currently. It's very thick clay soil. I've been trying to amend it with compost for about three years now, but it's still fairly clumpy. My plan is to deep-litter for as long as the ark sits there. I think the shavings will really help to break up the clay soil. When I move it I'll post pics of the amended soil.
To move the coop, I amended the skids to be "handles" - it was easily lifted with two people at the heavy coop end, and one at the lighter open end. I think it will be even easier to switch beds, as I can just push the coop around 90 degrees then slide it over to the next bed. I may need to make some kind of latch system to secure the coop to bed, haven't decided yet. I guess it depends how strong raccoons are... I know they're pretty dexterous, but I don't know about shoving strength.