As starters, from jet, an airline job would give you a boost in your career, so the A220 is not bad at all. If you are considering it, then do proper research specially since you are thinking to bring your family to Riga. Don't take me wrong, I liked Riga, but I was single, I'm no sure if with family is good (but that just me).
If you are looking to build hours and have a "better rating" then you should try RYR, WZZ (who are bonding you the rating), i honestly don't know about EZY thought. And yes, rosters , check the rosters.