So i decided to make a PDK fighter with 2 rogue for evasion. Wasnt until I got to about level 16 that I saw this enhancement:
Cormyrean Knight Training: You now use Charisma or Strength, whichever is higher, for attack and damage with shortswords, longswords, bastard swords, and greatswords.

When building the character, I mostly shirked Charisma, and went for a STR build. Would it be better to LR and start with my CHA higher than my STR?

If I remember right, I started with STR at 18, and left CHA alone.