The WSP are VERY close to the Equine Fresh. I use equine fresh for both cadbury AND my cat, and I absolutely LOVE, LOVE, LOVE them! The smell is VERY little, even with Cadbury not being neutered. My cat seems to like the equine fresh better than regular litter to.
A square bale of hay is usually around 50 lbs, just get you some nice thick gloves for when you go to pick it up, so you don’t hurt your fingers. 
check your local paper, and classified ads for people selling the large bales of hay, anyone who’s a good farmer, and is proud of there hay will break a bale open for you to see it, if they won’t, tell them thank you, and be on your way, it’s not worth it. The hay on the outside of the bale may look great, but the inside could be crap, or moldy. You don’t want that… obviously!
Sometimes, you can get a good quality half bale at your local farm stores, I know we have a Rural King here, and I can get a good quality half bale of alfafa hay for around $2.50-$3.00.