This is where the drawers will go. There will be a platform on top of this and the tub will go on top of the platform.
So here are the drawers almost finished. Just need to cut the front of the middle drawer so it fits between the two sides. The middle drawer is shorter because the tub drain will go in that space. Also debating if I want to drill holes to open the drawers or use drawer pulls... I'd do seashells but the slides have a pretty stiff stop, so they require a little more umph to get them open. Don't think shells would last very long. I'll have to see if they loosen up a bit after being opened and closed a bit.
In place...still need a little adjustment, but they fit!