Let me answer in 2 points now:
1)Your GMAT score is great for UIUC, only thing I feel is the GPA. i believe u r from India, is it? If yes how did u get that 4 point GPA?
In any case, did u try explaining the low GPA score in your essays especially the optional one?
2) I submitted my application on 6th October after the dealine and then dropped an email to the Adcoms to consider me for Early deadline and they agreed. Why dont you drop such an email asking whether they are considering your app for Early Round or not. That should help.
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