With the very greatest of respect I think you're getting ahead of yourself. I finished training during the last recession and would have given my right nut for a job on a King Air, Dash 8 or Saab 2000 let alone a jet.
While I understand you're looking ahead, and that's good, for your first job just get on the ladder. If you've got more than one offer then consider your options with weight categories and type relevance moving forward. But if there's one gig on the table and it gets you commercial jet time on your CV then crack on.
A mate left BMI Regional for EZY not so long ago so I'd imagine you'll be fine in any case.
But as I said, for now just get on the ladder. You've got plenty of time to be choosy later.
Best of luck with it.