Looks like about 10-12 bags of play sand for the run floor. You already have the roof overhead, sand will just make your life easy.
Get some antibiotic, it's in a white and yellow bag. Another of Electrolytes, same sort of bag. In case anyone should be feeling poorly after the move, the stress can have them give in to any illness they may be masking. I had to treat a little chick I bought for Coccidia and was happy to have everything on hand already instead of making a trip, the farm store isn't nearby. 20 miles.
A bag/canister of poultry dust. Or whichever method you want to use for mite/lice prevention/treatment. It's rare in my area that I buy a bird that is bug free. Might not be as big of an issue where you live, but never hurts to have a "first aid" kit. Blue Kote for peck wounds.
Grit is a need. Osyter shell, not so much. A good layer crumble has the right amount.
A length of chain and hooks if you'll be hanging your water supply. Or bricks to stack it up on. Flat on the ground, and it will collect bedding and crud that they kick around. It needs to be elevated.
Oh, at 14 weeks, they're not quite ready for layer crumbles yet. Get a small bag of flock grower/finisher. (or a big bag, and start mixing it for the switch at about 18 weeks until you "wean" them off it)