Affect of Signature Card On Utilization

[MontegoMack]

I have:

AMEX Premier Rewards Gold

AMEX Gold Delta SkyMiles ($5k)

BofA 1-2-3 Cash Rewards Signature Visa ($2k)

BBRZ MC ($500 - I know, I know it's low)

I just did a PC to the BofA card and realized that I may have lost out on utilization (which I keep at <10%) because it's a signature card. My questions are:

How will the signature card affect my score since I'm not expecting it to report a credit limit?

Should I consider rounding out my wallet portfolio with another card that reports a balance and credit limit?

I have 2 inquiries on EX and EQ and 3 on TU (one of which falls off 3/13). Each CRA has an inquiry that is over 6 months old. My AMEX cards are not even a week old. Scores in the low 700's.