i work on a 10 acre organic farm. about 1/3 is orchard and soft fruit plantation, 1/3 is pasture (for a small flock of sheep and space for chix) and 1/3 is raised beds and polt-tunnels for veg etc. despite having high yeilds of almost everything, it is difficlut for us to maintain a box scheme through the winter even for a moderate number of customers. you'd either have to buy stuff in, or get more land and staff.