I have another idea for this feat:
Celestial Warlock (Half-Elf), Level 7.
STR 8, DEX 14, CON 16, INT 10, WIS 12, CHA 16.
On Level up, I don't take +2 on CHA, but Elven Accuracy and +1 on WIS.
Then I multiclass with Cleric.
That gives me proficiency with shield and medium armour, boosting my AC...