I would really like that set up.Still uncertain why you think a droppings board with some dry sand and PDZ wouldn't work with sifting the poop out once or twice a week. Seems like a lot less work to me, but in the end it may not be. FWIW, I don't use a droppings board, either, but my climate is totally different and my "floor" under the roost is not solid.
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...that looks great..our temps are just like yours and it stinks... thanks for the heads up! Only good thing about frozen poo...no smell!..or, not as bad...

You have actually been a couple degrees warmer than us