Might be worth seeing if you can rent a telehandler type 4x4 forklift to make the move. When I did steel building construction, we were able to pull a 150 ton crawler crane out of the mud with one and not sink ourselves.
With the telehandler type unit, you can move the load very low to the ground by extending the boom, set it down and creep the unit up to the load and then repeat if need be, rather than just powering thru.
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Craig
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