Hey guys. Im taking gre test tomorrow. Wish me luck

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I'm 24 years old expected to graduate next winter with a master of advanced studies in architecture.
Im planning to apply to real estate development degrees at each of harvard, columbia and nyu for the fall of 2014.
I would have rathered substitute nyu with mit but the latter requires a certain number of experience years of which i barely have one and it is only related to architecture. So i saw more hope in getting accepted at the institutions aforementioned.
In addition, I have noticed that most of you were or are mainly applying to columbia and mit amongst others but no one mentioned anything about gsd or harvard which is what i'm actually aiming for. Any reason for that? And what do you think are my chances of getting accepted (given my age/ experience,etc.)? Any hints or suggestions for my test tomorrow?