A functional, yet decorative base idea I spent a weekend working on. Everything is vanilla friendly, but also includes assets from some popular mods (which I will list shortly). The base of the tower is sunk a half block into the ground to help ensure stability on an imperfectly level surface due to it's size. I used a console command mod like SkToolbox to flatten a 30-block circular area to serve as the building boundaries (command is /tl [area value]), but I built it quite close to the edges, so for a proper fit an area of 35-40 might be better. When deploying the build, it will show up with you standing in the courtyard firepit near the wisp shrines. By default the courtyard is in the south part of the structure, close to that edge. (you can use dirt mounts / digging at this point to affect the height of placement) 

Mods that have assets present in this file:
More Gates - Uses the reinforced gate for the courtyard entrance.
Epic Loot - The enchanter of course.
Warfare - Adds more weapon choices. Build includes all free crafting station pieces (the author has a paid version).
Magic Crystal Table - Adds extensions to the Black Forge and Galdr Table to bring them up to rank 4 (as well as a customizable blank table).
Rune Magic - Adds weather control and an auto-repair feature to the base (you will need to increase the range of the repair rune in the config doc to 50. The heal amount is fully customizable too).

None of the listed mods are mine. These will not be listed under required mods, since it's all optional stuff. enjoy!