Eighty acres is realistically a "hobby" farm! It would be a nice supplement to a retirement income, however! :thumbsup:
As was mentioned; if you can't rent more acreage (that would require bigger, more expensive equipment) then the best option is "speciality crops". Organic edible beans - pinto, navy, great white northerns, etc. Or, a "U" pick 'em operation - peas, strawberries, green onions, etc. That works best if you live close to a metropolitan area and the urban folk's can drive to your place and load up on fresh produce. Organic is also a profitable niche market in close proximity to urban areas.
That said; if you're serious about making a living on 80 acres and having a disposable income level similar to your previous career field - you might discover that all the benefits of lower stress and quiet country living - might not be "lower stress" at all; with trying to turn a profit and keeping everything on the farm going!
Back in the late 70's I worked with my uncle on his 320 acre farm in north central Minnesota. He raised edible beans, soybeans, a little corn and hay; had a few head of hogs and a dozen head of cows as he was really "small potatoes" compared to nearly all his neighbors! He also worked diligently with a couple of his larger operator neighbors. He traded his labor (and mine) with the neighbors for access to their newer and larger tractor's and implements. In addition, he also had a direct line to the inside information regarding planting rates, hybrid varieties, fertilizer and herbicide types and application rates, etc. He was able to recognize what worked and made money in that particular area versus gambling and making costly mistakes on his own!
If you're gonna take the plunge... I'd be really serious about getting to know your neighbors!!
AKfish