I think they are only having 1 x 737NG based at EMA from April so your chances may be slim in getting EMA as a base. I know one Capt who has been with Jet2 for 2 years and is only getting EMA in April, i think there are others on the waiting list too. I do not work for Jet2 so i could be wrong, sure others on here will advise.
Not sure i'd leave Easy LHS though for Jet2 but appreciate being away from home must be hard week in week out. I am presuming you are on the Bus as well.
Cheers