Thanks for the replies, I picked it up today, sweet little unit, very small footprint, uses a 3" stove pipe to vent outside(no fumes), according to the specs it burns less than 1/2 liter(.12 US gal) per hour of use on the highest setting(12,000 btu) and 1/4 liter(.06 US gal) per hour on the lowest setting(4,000 btu). The unit preheats the diesel and burns the fumes, only burns raw diesel at start up, supposed to have a nice blue flame after initial heat up. The square footage of the shack will be only be about 72' square or about 504' cubed, will probably not be much above the lowest setting(depending on my insulation).
As far as wood goes, I live in southern Alberta (got a small acreage with about 300' for Bow River frontage) and I can almost count the number of trees on one hand between my place and Calgary, this means I would have to purchase the wood, not a big concern, but if I have to purchase fuel, just as soon put it into a small container and carry that around as opposed to stacks of wood.
Now to think about the shack plans, already have a good idea in my head, just a matter of putting it on paper and calculating my material requirements.