If my company applies EB1 this month (Aug, 09), and everything goes well, by when should I expect my green card? What are the disadvantages of applying under EB1?
Too many variables. IF the priority dates remain current AND IF USCIS follows its average processing times and IF you file I-140 premium processing concurrently with your I-485, you MAY get green card approval within one year. I see no disadvantage.