Dutch doors to outside, gives you another door to get the horse out in the emergency, and another window looking outside with bars. Runs with gravel - pea gravel or birds eye. Concrete stall flooring with inch thick cushy mats. Bars or stiff mesh in between stalls but with 4 or 6 feet of solid wood on one wall in between horses to provide a safe haven for eating. Drop down window on door so you can leave it open for friendly horses to stick their head out or close it for not-so nice horses. Rubber brick in aisle, tie stalls, automatic waters that monitor intake in stalls....
80x120 indoor arena with crumb rubber and special synthetic (not slippery or dusty) dirt/sand.
66 ft x 198 full size outdoor dressage arena with well draining footing.
100x200 outdoor well-draining jumping arena.
66 ft outdoor round pen. Ideally a bigger, perhaps 90x180 indoor arena as well. And on the thoughts of a dream barn, maybe even a big 200x300 outdoor as well...
We bought a 5 acre farm with a 60x100 indoor arena and no stalls but room for them. I tried to think of all the things I wished would have been at barns that I boarded at in the past. First, we put in 5 12x24 stalls with gravel base and rubber mats. We put in a good sized tack room with dehumidifier. We put in a small bathroom. We put in a front load washing machine for horse blankets and hotwater heater for horse wash station, outside. We built a wooden round pen. We fenced all the acres with 3 rail wood fencing. We cross fenced with wood to make 5 pastures. We came 10 feet off of the neighbors fence all the way around the entire property. With sand footing, this is a wonderful way to enjoy riding outside all year on safe footing. We fertilized and seeded all pastures. We are putting an obstacle course in one of the pastures for fun. We are building up a large dirt hill. We are cutting in a creek crossing. We are laying down 4 large round poles for them to walk over/jump. It's a work in progress but a lot of fun creating it. We charge $300 for full-care and there is a waiting list. Hope this gives you some new ideas! :)
Please don't go too deep. Western riders don't need deep we need good and fluffy. I would also say for size 80 by 120. Any narrower then 70 it gets tight especially if you get reiners or jumpers wanting to use the quarter lines. Good luck! It must be so exciting!