I had a freshly overhauled engine lock up 10 or 15 years ago. It had sat for maybe a year (had been stored in the office of the shop). Its hard to remember exactly how long it sat around. I would recommend turning it over from time to time. Maybe every 3 months. If you can turn it monthly so much the better.

Fresh hone on the cylinders is different than the polished surface after the engine is broken in. If I recall the rings had slightly (very slightly) rusted to the cylinders