i have been reading your posts for a while. you really sound like a cool guy. your stats maybe rather low for UCSF, especially this year. therefore, do think of it as a dream. that way, if it happens, then you can just celebrate like crazy. if it doesn 't you won't be disheartened cus you will have prepared your heart for the ill news.
i know that you're a cal state resident but if i were you, i would choose NYU over USC. they are both expensive but NYU can atleast give you a nice name and a traditional DDS education (no PBL business). and it does not hurt to live for 4 years in the murray hill area of NYC.
good luck in whatever school you choose!