>>544021>How hard would it be to use said lumber on the land to build the cabin to cut down on costsIt's cheaper and much easier to use store bought lumber.
There are cabin / cottage plans with full material lists and instructions available that require minimal cutting, which will allow you to fairly cheaply and easily put up a 24'x24' building and do so without fucking the little patch of woods you've got (where much of the wood probably isn't suited for building).