Well, January in Hawaii is wonderful - you would not be disappointed. I came to the Big Island 4 years ago, and after picking lettuce, cucumbers, and cherry tomatoes from my garden on Thanksgiving Day - that was it - I was hooked! I concur with other posters, that Big Island would be a good fit for you. Plenty of permie stuff going on, as well as some fine examples of permaculture in action. I would be happy to help you make the most of your visit here, as well as organizing some sort of permie forum. I bet you would enjoy seeing some Korean Natural Farming in action as well.
When you have a moment, check out my website: FrontYardFood.org - Since 2011, we have given away over 5,000 vegetable, herb, and fruit tree seedlings at the Hilo Farmer's Market. I like to think of a seedling as a "gateway drug" to Permaculture! ;o)
Let me know if I can be of any assistance. I am not sure what sort of accommodations you require, but you are welcome to make use of the guest tent on my farm.