I have one and will definitely echo what @aart said about the nesting boxes- especially when I collect eggs when it's rainy, water will go through at the hinge line. Also make sure you have ample ventilation, which these plans don't allow for much. On mine, the windows are at roost level, so now that it's winter, I have them closed and needed to add ventilation. I bought my coop and did not build it, so didn't really have a say in the matter.
I would also recommend utilizing the raised design to make extra run space, which has been great because it's warm and cozy under the coop, and also less windy so my girls use it all the time. It also never gets wet and is a great dust bathing area.