Dont underestimate the amount of work getting this moved!I have messaged the seller in Edinburgh and await a response.
Take it easy please and let other people do all the work.
Skotl's kind offer will help a lot.
Check the width of the base = hopefully it is narrow enough to let the engine crane fit right in.
Don't try to move it on the engine crane though - they are purely for lifting. Borrow a pallet truck if you can they make life so much easier.
Good luck! Seller sounds pretty genuine.