hmm....maybe you should take a look at my application. there's a few good tidbits in there other than the "Chicano/Mexican" box. lol.
I'm sure there are. Many people would consider you to be an applicant worth admitting based on your 150/3.XX GPA, life experience, and demonstrated goodness.
However, to get into a top school like Cornell, you need numbers, period. (OR, you need a "racial advantage" -- sorry, but that's what it is.)
I can guarantee you, there will NEVER, EVER be a white man (or woman) who gets into Cornell with a 150. It just won't happen excepting cases of Nobel Prize winners (who would likely pull a 170 anyhow!) or a famous writer (like the Prozac Nation lady with a 160+) . (If someone finds a case of a white guy with not incredible experience getting in, it's either BS or a massive exception. However you'll find a few 150 LSAT black/latino men and women who scrape in.)
So, regardless of the details of their early decision program, the only reason you have a single prayer of getting into Cornell is because of your "race". (Of course, your other attributes will make a difference, HOWEVER, as mallard pointed out, URM status [particularly black or latino status] is a necessary [but not sufficient] condition for acceptance with a 150 LSAT.)
If you don't want it to be the only reason you get into Cornell, cease checking boxes on applications of all kinds that indicate you are a minority.
Such boxes are used for one thing and one thing only: racism -- the making of decisions based on race. Being perfectly honest, however, if I was you, I'd still use my race to my advantage, sad as it is to have to be truly honest with oneself about what is happening. (I.e. for you to be admitted, someone else is rejected. Someone else was rejected for being white, just as in other situations in life a latina woman may be rejected for being latina. It's the flip side of your acceptance. It's racism.)
That said, good luck to you, it sounds like you're worthy of admission based on what I consider to be better measures (e.g. community service, etc.) Consider taking the LSAT again if you don't get into a good law school. Waiting one year may be less than ideal, but going to Cornell one year later beats going to a much poorer school right now. I'm sure you're capable of getting at least another 5 points, so consider a class. With a 160 you could get into even better schools, check out law school numbers and look for the URMs.
Good luck, and definitely do all the follow-up activities you mentioned.