Newark is junior, so any plane is up for graps (for now). What they assign a new hire is up to them and what they need at that time. After get hired, bid any plane you want and they train you (assuming they need you on it, which they do in EWR). You can always move up in pay/status, but you have a two year freeze for moving down. Start small and move up. I'd try to get the 737 in training. Free type rating. Good experience. Fly it a year and then bid the 757/767. Fly that a year or two and bid the 777 for awhile. By then the 787 will be here. It depends what you want. Domestic, international, more money, more days off, fewer legs/longer legs, small, medium, or large pay/airframe, commutable, non-commutable, etc. I did the 737, 757, and 767 type ratings in my first year.