After much consideration, I have decided to abandon my previous housing project, Whitefalls Burrow, so that I could build the dwelling as I had originally intended, as a tower. However, to ensure this version was not glutted with too much irrelevant information, I had to basically make a new mod, which may not be a bad thing considering the kinds changes I made to the interior.

Changes:
-Redrew the navmesh from scratch.
-Moved the indoor garden to the center chamber on the upper floor.
-Moved items in the upper center chamber to the third room on the second floor.
-Removed a storage room on the first floor.
-Moved objects from the storage room into the hallway.
-Changed lighting to reflect aforementioned changes.
-Mage merchant was not transferred over, and I have no intention to do so.
-Added a trapdoor to the first room on the second floor.
-Incinerated the mannequins for moving too much.

Miscellaneous Files:

Interior Template:
It was initially designed as a fail-safe, due to the instability of the exterior navmeshes prior to some updates. However, the file may prove useful to anyone who likes the interior, but wants the exterior moved to another location. To do this, rename the file from Interior Template to Snowdrift, open the CK, copy the exterior assets from the interior 00Snowdrift, and paste them to where you want the tower to be in Skyrim. Do not forget to edit the navmeshes and door portals as needed.

Snowdrift Headless:
Removes and replaces the animal heads from the interior with banners and baskets.

Thanks to the Nexus forums/community and Bethesda for helping me with my troubles with this mod.

Enjoy your stay.