profile evaluation...and need advice

I want to apply for top B-schools for fall 2011. My profile:

B.E 2004..decent grades -> 2 yrs at a major Automobile firm ->Shifted to finance. 2 yrs at a proprietary trading firm -> Went for a Masters in Quantitative Finance. I wouldn't like to bring up the name of the school here. Though people know it, I had a horrible experience. 3rd grade faculty and no relevant jobs at all. My grades are really poor as I had no motivation at all after joining. Graduated in 2009 and joined another large prop trading firm at a decent pay and profit sharing. -> Now the firm is closing down its office in the country I'm employed. So in a month I'd be unemployed. ->???

My previous GMAt is 710. I've reapplied for GMAT, and let's say I can manage a score of around 750. I'm having a hard time finding decent, relevant jobs and everywhere I go , ppl ask why I want to move from front-office to middle office/back-office. Given this situation, do I have realistic chances of making it to B-schools ranked between 5-15? I'm specifically interested in Stern, Haas, Duke, Cornell, Yale to name a few. I don't want to go to another school which doesn't have decent placement records and waste thousands of dollars again. Another thing I'd like to mention is I can get a good reco from a few profs, from my current job (spent less than a year) and from the Automobile firm (which is too far back). I won't ask the 1st prop trading firm for reco due to personal reasons.

Is it still possible to make it to a top B-school? My main reason for doing a MBA is a brand name and a good network(which I obviously won't mention in my applications). I think these are the only things that matter in finance.

Pls..need some insights