Like trumpet suggested, apply for the Delta and then PC it, and make sure to keep your history good with them. Amex will most likely pull EX for any card you apply. But I would say in general they would expect 1-1.5 years of history and card use before granting you the BCE. That was the reason that Chase gave me for denial (they wanted to see some more established accounts before they give me a card, they haven't seen the 3 I have applied and gotten accepted for yet, my goal is to try in May for it). I have 4 cards and I think it is more then enough for me for now.
