I buy my pelleted bedding by the pallet (50 40lb bags) at roughly $200/pallet. A pallet will last about a month if it's not too rainy. If rainy, like this spring, I used a pallet every 2 weeks because we were getting so much rain that the barn was flooded (first time EVER that happened). I use 2 bags of pellets/stall for horses that only come in to eat and/or at night in poor weather. If they are stalled for days on end, I use 5 bags/stall and it will last a month if the stall doesn't flood, just add about 1 bag per week.
I wet the pellets down in the bag. You need to wet them down because they don't fluff as well if you just put down pellets and wait for the horse to pee. Plus, think about walking into a stall bedded in BBs......wouldn't want to sleep on those either. If you dampen them in the bag, they break up and come out nice and fluffy. Poke a hole with a rake handle and put water in the bag until it comes out the small little holes that always seem to be poked in the bags, let sit for 15-30 mins (usually while I do another chore like lay feed and fresh water) then I open the bags all the way and dump them out in the stall. LOTS of nice, fresh smelling bedding and I spread it a little bit but mostly let the horses push it where they want it. It clumps nicely when wet, makes removing pee spots very easy, is very fine so falls through the tines of your manure fork easily and I find much easier to clean than shavings. They are more expensive than shavings in bulk, but I don't find them as dusty (even the triple cleaned Racetrack shavings were much more dusty) and I think they're easier to work with. You do have to stay on top of cleaning to make them last, we do 2X/day if the horses are in.
You'll need water buckets, hay feeders, grain tubs, and trash cans to store your grain & salt in. I buy the metal ones, keeps rodents out. They chew right throught the bottoms of the plastic cans. You'll need a grooming tote with brushes, combs, curries and any sprays for each horse.
Depending on where you're going in Utah, you may need to blanket, it gets really cold and snowy and at least for the first year your horses probably will want something more. I blanket here in OK and I know in Utah, I'd still have to blanket.
Brand Inspection is actually a lot less than you think. You need a way to prove you own all of your horses. Once you get to Utah, call the Brand Inspector for your county to have them come out and inspect and give you either an inspection card or lifetime travel permit. Here's a link to their site: Utah Department of Agriculture and Food - Horse Brand Inspection (Horses & All Other Equidae)