A miss conception with permaculture is that it requires more time consuming work than convention agriculture. However, this is not so. Generally with a good system set up, a permaculture farmer generally only has to harvest.
The first thing I'd consider would be a mixed-species grazing operation. With some cattle, sheep, chickens, and possibly pigs, you can immediately start improving your land and soil food web (look into Holistic Planned Grazing or some of Joel Salatin's stuff if you haven't already).