I would suggest looking up citi cards on credit karma.com to get an idea of what scores they are approving for their cards.
Which report do they usually pull?
with the exception of my HomeDepot card, they pulled both EX and EQ for all of my cards.. Never TU..
I initially got the dreaded 7-10 day message, turns out it would have been declined for to many INQ. I called backdoor number in sticky thread for recon (got transferred around and eventually got EO) she put a call into another dept and 3 days later got me approved (for simplicity.) About a month later asked for CLI of $4000 and was granted $1500 of it so I could do some more BT at 0% (HP) If you want one of their cards (I liked the 18mo. @ 0%) then give it a shot, if you get the FO message try the BD!