I'd try to mix them together......a mix of sizes, shapes, materials will make for better decomposition.Here's another update for anyone who might care.
Here's how things look in the run:
The birds continue to LOVE the side with the litter and just pass through the side with the sand to get to the side with the litter.
The side with the litter continues to smell nice. The litter is staying dry since it is raised off the ground up on pallets.
The additional boards I put around the base of the coop are not high enough to keep the birds from flinging the litter out through the welded wire fencing. I will have to add more or just give up trying to keep it neat looking around the outside of the run. Right now I rake it up daily and put it back in the run. Yes, it is an exercise in futility but I am compelled to do it.
The sand side is staying surprisingly dry. I honestly expected with all the snow melt that I would have standing water in the run. As it turns out, the run is dryer and more solid than the entire rest of my yard. It still stinks, but the sand was good for something at least.
Since the sand side seems to drain pretty well, I've decided that I will try the deep litter in the run without raising the elevation of the run. March and April are the wettest months, and while we still have plenty of spring rain ahead, I think the run drains well enough that I won't have the problem of excess water that I was worried about. If it turns out that I'm wrong, I can always clear all the litter out and raise the run later.
So, with that being the plan, I ordered up some wood chips. I had to pay for them as I couldn't find anyone looking to unload them for free. Not too bad though, only $50 for a truckload. They got delivered today and I must say, there is nothing like the smell of fresh wood chips, especially after a long winter. I hope to put them in the run tomorrow. I'll be putting in 6-8" of the chips to start and then I'll spread the existing litter (shavings, straw, hay, leaves) over the top of that. I don't want to go thicker until I can put another row of boards around the bottom to keep them from flinging it all out.
I'll update again at the end of April.
I think Bee mentions that in her video, and it just makes plain sense.... like a lot of things Bee says.
Might also want to start with less depth, easier to add more than have to move a too deep, non functioning mass.
Just read story yesterday about someone with 8" of wood chip mulch that was packed down and anaerobic underneath.