EK seems to be here to stay. You cannot say the same for many A320 operators that will accept DEC for your future contract positions.
Future downturns may have you out of an A320 job for up to 6 months until you decide it is necessary to accept a sub standard contract in a place you would not want your family. You could easy be in the same position as many contract pilots who are job hunting regardless of their known need.
EK is the pick of the sandpit operators. Dare I say it, but also EK is the new CX. Hard to think that you could put them off for 2 years.
Missing the chance for an A320 command is a huge decision not to be made lightly. The fact that you made an EK application indicates that you must have already made this choice.