why not wait until your delta is up next feb then apply for the business..and cancel the personal..that way u extend the benefits...

better to cancel your continental card after you apply for another chase card..that way if you have to call reconsideration then you can offer to cancel the continental then...

i'm pretty sure that the ink is 25k upon first purchase and another 25k after 10k spending...if your willing to get the 30k delta card u might as well get the 25k ink instead and not deal with min spending