Be sure to ask Chase after you get Continental or United to bump you up to 50K via secure message and you'll have well over 150K miles... time to find yourself first class flights to Hawaii!
And one last tip... Even if you happen to have signed up for the 30K offer and happen to receive an offer for the 50Kvia email or in the mail, make sure to send a securemessage to Chase and ask them match the offer.