I am not sure of your timing , but if you do use ceder or any wood that is not kiln dried then stack it in the bus with stickers between each course, for as long as you can to get it stabilized.
When we built our house we took the logs to the sawmill to cut into plank flooring. Let it dry in an open shed stickered for over a year. Then laid the floor tight, very tight. Well we now have a good bit of a gap in the planks. we really should have had the boards in the house for a month or more then put them down. That final drying, and acclimation is important for gap free woodwork. To help prevent splits on the ends paint the ends while drying.