snip

Grains are not that difficult, and can be harvested with a hand mower
(scythe), and hand winnowed and prepared.

1/4 acre of buckwheat / wheat / other grains will provide enough for a
family of four usually when combined with other foods.

Here is a good source for grains and other biointensive gardening info /
supplies:

http://www.bountifulgardens.org/seed...rains-seed.htm
l

I think five acres would be more than sufficient if you apply permaculture
type efforts. Remember one effort / multiple returns is best.

Strongly advise at least one acre pond, with running water, or solar well to
keep it full. Fish are protean, and can also attract ducks.

Consider foraging as addition to farming.

Look at Tappan on Survival for some more subsistance farming / foraging
ideas.