Freshly machined surfaces will (usually) be dry of oil or it will run / drip off in short time, as a result, generally, fresh engines are difficult to store so they 'keep'.
Assuming the assembly will hold Oil, it would be a good idea to put oil in it, and if it's likely to be in there a while, (1 year +), use new but cheap oil, as the additives in any oil have a shelf life, you'll likely need to dump that oil before running it. I suggest this only to give the gearbox some protection. Spin the output shafts, so the gears (in neutral) can spin over and splash some oil about. It's not ideal, but better than nothing.
I wouldn't recommend turning the engine over or if you do, keep it very limited. Assuming it has a fresh ground cam and followers, any assembly lube applied here you don't want to wipe off until it's about to run and be splashed with engine oil, though, you will want to turn it over 1 complete rev (read on).
With the Oil Filter in place, remove the Oil Switch and with clean oil and a clean oil can, fit an adaptor and hose here so you can pump oil in to the galleries under some pressure to get oil to the crank, bearings etc. Initially when you do this, you'll need around 1/2 a litre of oil, as you'll be filling the oil filter. I'd suggest doing this say once a month to be on the safe side, but each subsequent time, you won't need much oil at all, say 10 pumps will be enough.
Remove the Spark Plugs and spray some Preserving Oil in each of the cylinders. Sadly, it's unlikely this will coat the entire cylinder as you can only work from the spark plug hole. Pick the 2 cylinders that look to have the Pistons at BDC, give them a good spray, wind the engine over 1/2 a rev, do the other 2. Refit the spark plugs. I'd suggest doing this only the once.
Spray some preserving oil in to the ports, make yourself a decent cover that you can bolt on, with a manifold gasket and seal up the ports.
If you can keep the engine in a warm dry place, that will go a long way to keeping it 'good'. Lounge room looks good 
