I took the plunge and applied for the Penfed Promise, and got a $8000 SL.
I'm a little bummed since I have about $7000 I'd like to transfer over from other cards, but that would eat up too much of the $8000. I did transfer $4800 over, but completed the survey they sent me asking if I could perhaps get it bumped up a bit higher.
Starting-Over2013, they actually sent me the survey yesterday since I opened my account just the other day - I don't know if they send a different one after applying for credit, but I guess I'll find out! I decided to fill it out with my question about the credit limit either way - or I can fill out both if they send another to have better odds.
I hope you can get a better SL too! It looks like your own scores are actually a smidge better than my own.