Congrats!! I'm also looking to add a 3rd card, but I can't get a QS1 approval to save my life! Everything I've read says if they approve for Platinum, they'll approve for QS1, but not in my case. I even went through the exec. office and still got denied. Waiting on the letter to find out why. Hopefully, I'll be in your shoes soon, at least, with a Platinum increase. 
