A couple of commands on the mini bus after 12 months, so that would be the quickest at the moment. Over 110 777 now, with a planned fleet of 160. The majority of the 1800ish FOs ahead of you on the Seniors list are on the B777. If/when EK orders the 77x it wont be available until after 2020. So don't come here looking for a quick command, as the days of the fleet doubling every 3 to 4 years are gone. With present orders and aircraft retirement plans there is no command seat available for a new joiner at the moment.
Good luck,
The Don