How much room do you want per stall? Are you going to keep calves individually or a couple per stall. I would think each calf would need at least a 12x12 space-with at least a 6foot alley way- With 4 stalls a side for a total of 8 you"d have 48longx32feet wide plus a feed-storage room and maybe a shed roof on one side for a wash rack?Not sure on cieling Hieghts or roof construction-which would depend upon snow loads in your area-JUST A GUESSTIMATE-JMO O0