That's correct. Also, the portals are going to search for the corresponding Nether Dimensions: (Overworld X, Z / 8 = Nether Dimensions). I'm sure you knew that, but just in case. It's tough when you have to move nether portals and they're a small amount of blocks away.
(Example: Overworld Coords of X344, Z96 = Nether Coords of X43, Z12). If you build your nether portals with that algorithm, you can put multiple portals within a few blocks of each other in the Nether and they will still link properly.
Good luck!