Hi bruinboi,
I'd say that you're on the knife's edge right now in terms of having a good shot at a top-ten school. A 690 is okay IF you had good balance on the GMAT (i.e., you didn't do worse than the ~80th percentile on each half; that's just my own rule of thumb) and you have some really interesting things to talk about in your job. While a 3.2 is by no means a catastrophe for a GPA for a normal person, for a top-ten business school it's actually considered pretty low. So, getting that GMAT score up a bit could certainly help, even if your balance is good.
Any reason for the low-ish GPA? Did you start strongly but end weakly? Vice versa? Did you do well in your more quant-oriented classes? If not, then perhaps taking a course or two right now (heck, you're at UCLA!) in some quant-type classes, and getting As in them, might help.
Of your list, Marshall is your best bet. For the rest, it will really depend on how strong your work experience is. I see a lot of bad advice on these board where "experts" say "Looks good. You can get in," without knowing anything about your job beyond 10 words, but the *meat* of what you've been doing on the job these past several years -- leadership roles, overcoming challenges, winning over skeptics, etc. -- is what will ultimately decide your fate.
Good luck!
Scott