I spent alot of time and resources playing with my building layouts, and the majority of my production uses this 14.667 layout.
For farm's I found the best layout for me was four in a row w/storage house above: each farm having it's own wheat field directly below, like so:
Code:
S
F F F F
W W W W
B B B B
B= Backup wheatfields depending on space.
That also leaves me with prime locations next to and above the storage house for Mills/Bakery/Stables/Brewery/etc. (Though I consolidated most of those anyway).