Is there any - habitable - jungle left in Nicaragua?

Uhmm, ehhm, I've got a bit of really disturbing news to start this new year: in addition to being a diabetic I have now been diagnosed also as alergic to gluten and cow dairy and sensitive to all environmental polutants. And although up to now I fancied my quiet early retirement living on a barrier island (since it is still fairly undeveloped), USA is not too good a place to try to adhere to the new health requirements: too many antibiotics, pesticides, herbicides etc etc in everything. So I have been raking my brain where I could live pleasantly and healthy, too. I remebered a stint of working and living in the cloud forest of Costa Rica, where - after establishing some initial contacts with the locals - I was delivered raw organic goat milk, from which I experimented in making organic goat kefir, yoghurt and cheese in some of my spare time (I had no TV there, and you can only hike the nature preserves and read books from the vast local English library so much), with such great results that not only my colleagues from the institute, but soon many others were clamoring for my hobby production. There I was also delivered plenty of organic vegetables and organic meat (fish, though, was scarce, and I love fish) - enough to sustain me and for a pittance comparing what it costs in Europe or even in the USA. The disadvantage of CR, though is, heavy duty on imported cars and steep car prices. Both a rip off, which I would not condone and I don't want to live without my car, so CR is not a comfortable living option. But I would love to emulate the good part of CR living in Nica, if possible. There I was living in a simply wooden cabin high up in the cloud forest (no polutants), yet with a phone and internet access ( abd I could have had a satelite TV had I wanted that), cultural diversions being a four to sic hours car (or bus) ride away, in San Jose. There I had my own mini banana plantation and wild avocado trees aplenty, which attracted howler and capucin monkeys (bananas) to act as an (awfully early, though) alarm clock and mot-mots and sometimes even quetzal (avocados) for my breakfast viewing pleasure. Are there places like there in Nicaragua? At the reasonable distance to Managua, so I could visit the organic farmer's market I found out about on this page, and may be even sell some of my cheeses - if I happen to find too much time on my hands and overproduced for my own use. Besides, I am an early retired international ngo management and development consultant and would love to use my professional expertise and contacts with foundations, etc. to help deserving local ngos. Any ideas about a place I might love? Any disadvantages of Nicaragua for my needs? Help, please.