This is a collaboration between me and @Omega482to give you the best possible KSC experience we can offer.

Must install:

Tundra's Space Center
https://forum.kerbalspaceprogram.com/index.php?/topic/174368-122-151-tundras-space-center-v091-november-17th-stockalike-ksc-launchpads/

Omega's Stockalike Structures
https://forum.kerbalspaceprogram.com/index.php?/topic/169891-wip-omega482s-dev-thread-omegas-stockalike-structures-no-textures-required/

Kerbal Konstructs
https://forum.kerbalspaceprogram.com/index.php?/topic/151818-14x-and-above-kerbal-konstructs-14550-20jan2019/

Optional but prefered: KerbinSide Remastered
https://forum.kerbalspaceprogram.com/index.php?/topic/174336-kerbin-side-remastered-101-173/