Yup, I would take that Optima card offer if I were you. I was so happy when they sent me that offer, I signed up right on my mobile at an airport while waiting on a flight. 
After that I logged on and found out the starting limit was only $500 but what the hey. At least I have an Amex card again. After that I tried to apply for their other cards but was constantly denied until I cancelled the Optima card (read about it on here as a matter of fact). Good luck! 
You could do like I did. Ignore the offer, and wait another 15 to 20 years. 
@AKO17 wrote:Thanks, everyone. I'm going to hold off on the offer. By next April, my last baddie will age off and I expect my scores to bump up significantly. I'll pay my car loan off in January which will leave me with zero debt, a $115k base salary and around 5% credit card util. Hoping all of this does the trick as I don't want to be tied to the Optima product for 12 months if I can get a better offer before this time next year.
Understand.. Just keep in mind if your car loan is your only installment loan your scores are going to take a nice hit once it is paid off.. Just something to keep in mind, you always ideally want some kind of installment loan. Credit is a weird beast. When I paid off my old car and before my new lease reported, but my old car note showed paid off I took a hit from anywhere from 8-30 points depending on Credit Bureau.. Messed up if you ask me.. Once new lease reported again recovered most of score and since recovered it all after making 6 months+ payments on new installment loan..