The "best" plan or organization for any farm depends on conditions as found, the resources available and what the operator wants to do. Research is providing some guides to use in deciding on the plan you want.
Loftsgard, Laurel D. and Heady, Earl O.
"What Makes Up the "Best" Farm Plan?,"
Iowa Farm Science: Vol. 11
, Article 3.
Available at: https://lib.dr.iastate.edu/farmscience/vol11/iss2/3