Picking out a hutch

All the critters are doing well here on the farm. I've been looking at various rabbit hutch designs for my hubby's honey-do list. We currently have 4 rabbits (1 mix breed & 3 lionheads). The males both have their own spacious pens but I'd like a little bigger set up for the females than we have now.
This one has been my favorite so far.

Even though it was made for chickens I think it would work great for rabbits as well. It would not be functional outside in our summer heat. I'm hoping that keeping it in the barn (which is where their hutch is now) and adding a fan would keep the buns cool. With a few additional tweaks here and there I think it would make a great rabbit hutch. I love the window and think it's my favorite part. Now I just got to get my honey to build it!