First of all Brian, welcome to permies.com and I hope that you find a whole load of useful things here.
As for the great Fukuoka. I read One
Straw Revolution and was massively impressed. I have the other book too. We have 17 acres here and we tried to grow a grain crop using no-till, sow into pasture, Fukuoka style stuff but alas it wasn't successful though I think that was down to using a modern variety of seed that couldn't compete with the natural flora. So we'll try again with a heritage breed.
I think folk are right here when they say to practise things first. Fortunately we can afford to experiment here so the 'learning experiences' (failures) are not so hard to take.
Plus it's true that you'd need to adapt the method for your own location but then that's what
permaculture is all about - watching YOUR shade patterns, watching YOUR weather, watching YOUR soil types and moving in accordance with the findings. For me, that has been the greatest life lesson I've had from
permaculture - to slow down! I am by nature an enthusiastic, impatient person but I am learning to slow down and learn, watch what nature does as she's SO much better at this growing stuff than I am!
Hopefully your wife's family still have all their traditional skills in farming that land, skills that hopefully haven't been too corrupted by the modern agri-business. Those would be good to learn whilst at the same time running perhaps a part of your land in a Fukuoka style to see how you can dove-tail the two.
If you do a search on the forum for Fukuoka you'll get loads of info back like this
https://permies.com/t/2214/permaculture/masanobu-fukuoka
What a lovely opportunity - enjoy