Don't part out. Don't get clever. Let the asset work while you sleep.
Once you buy a set, it stays sealed until exit. You don't open it to verify completeness. You don't part out minifigs. You don't build display copies. The box stays in its original shrinkwrap (or with intact factory seals), in climate-controlled storage, until the day you ship it.
Parting out is a different business with different economics — it requires labor, sorting, inventory management, listing dozens of items, and shipping fragmented orders. The margins look bigger on paper but the time cost destroys them. Sealed sets are a passive asset. Parted sets are a job. The doctrine is built around passive compounding.