Love to have a Korean Tiger unit or White Horse unit, two of the most feared units by VC in Vietnam War. You would speak only Korean in the field unless through an interpreter.
Uniform canbe two folds:
Basic load: Identical to the basic ARVN/Philipino/early GI two-pocket cotton OD shirt/two-pocket OD pants, boots, M1 helmet, M56 LBE with M14 or M16.
ROK SF: Dock hunter pattern camo (more green than tan, unless you can get the real ROK camo), the rest remain the same. You can get used Duck Hunter top for $10 and pants for $10 (I know where).