My cadet says he doesn't remember anyone in his CBT company wearing sunglasses. Probably depends on your cadre.
Unless the world has changed drastically, not even close to being allowed. Plus, sunglasses cannot be worn in formation per Army regs.
Hopefully a current cadet can confirm.
The Corps hasn't "has" that much. Give us a break.
OP,
I would just stick to the list of suggested items...