IBFP would have to be similar to a diversified investment folder in concept. I've raised backyard food for a long time, unfortunately not with AP system yet, and my meat and veggie production was always higher in quality and lower in contaminants.

On 1/4 acre we raised nearly half our total food supply for a family of six people. With an AP system thrown in that might have bumped it up to 3/4 of our needs. Chickens for eggs and meat, rabbits, turkeys and lots of veggies from a 1000 sq. ft. organic garden. I even had a shepherd/malmute mix dog to ward off predators and corn rats. I hunted wild deer to supplement the freezer and bought from a food coop that handled organic foods in bulk.

Variety is the spice of life and diversity in food production is a way of ensuring an ample supply and you decide on the quality. Cheers!

Dean