Hope you enjoy adversity ;> The list of obstacles for fruit trees in a bog is formidable: access, sunlight, forest succession, super-low soil PH, wet feet (yours and the trees), cedar rust, fire blight or other fungus,
deer, mosquitos...
But there is always high ground somewhere, hopefully around the house, and the hugels
should help. If you keep the scale small it might work. You should probably scope out actual sites there before getting too fired up.
Best of luck