All good advice. One more thing. Whatever you do, however cold the winter might be, do NOT drain the coolant because it also protects the engine block,wet liners if fitted, coolant passages and water pump innards from corrosion. If anything drain a litre of coolant and stick another litre or so of the undiluted stuff in there.
I've recently been shown some photos of a "brand new, old stock" Nissan turbo engine (expensive) bought by a friend which had been test run on a rig then stored on a pallet without coolant in it. The cast iron water pump impellor had corroded into just a blob of rust inside, totally ineffective. The engine overheated badly first time it was fitted in my friend's restored car and run up. It made a terrible mess of the entire cooling system.