Our first coop was built behind our garage on concrete. I put plenty of shavings on the floor and never had a problem with bumble foot. They were in that coop over a year before we got our second coop.
We were given a 9 x 16 storage shed so we turned it into our newest coop (it has a wood floor covered in vinyl with wood shavings) and ordered more chickens. In the first coop I have a poop board with PDZ under their roost and that's all I cleaned every day. Seldom did I find poop on the wood shavings on their floor. Once their pop door opened they were outside free ranging and didn't come back inside except for hard rain and to lay eggs. Twice after very hard rain I cleaned out one corner of their coop with a shovel and added all new shavings. I also put wood pellets under the shavings in that corner and they worked great. The concrete slab in that corner was slightly lower and allowed rain to seep in if it rained really hard. The chickens never ate the pellets and they smell so good but shavings do, too.
Will your chickens free range? If not that might change what you do.
I only have four silkies now. They only free range when I am out with them - lots of hawks. And, they are in their run as long as it's not wet and cold. There's no issue with smell - I clean up the poop every day. They sleep inside this 4 foot wooden box up from the floor a bit and filled with straw that spills out for a 'ramp'. They seem to like it a lot. I take all the poop out and lay some fresh straw on top daily. I guess I need to put more shavings and straw down on the floor... Like I said I've had birds in there for nine years (silkies) and it's pretty darn clean and I never had any issues. But now I'm worried about bumble foot - never even thought of it before. More shavings though, means a lot more effort to clean them all up!