I suppose that would be ideal, however I question the need for that much space. If you can grow many of your veggies 'upwards' like cucumbers, melons, use patio pots for tomatoes etc. do you really need 3 pigs? It's a good general guide for beginners tho', as you know, when you get practiced at something you can reduce the area needed - or expand to grow 'for sale' produce.