Need help selecting a second credit card

As the title says, I need help deciding on a second credit card.
Just for context:

Occupation: Undergraduate Student (Sophomore Year)
Credit Score: 770+
Credit cards owned: 1 (BoFA Customized Cash Rewards)
Length of Credit: ~1 year
Credit Usage: 5-15%

I am going to transfer from a CC (Community College) to a four year University (Still waiting for results). I know that my expenses in general are going to go up (Probably fees, groceries, plane tickets, etc), and I feel like this is the right time to make a jump to a better card.

Feel free to ask for any further clarifications, and at last, thank you for helping.