Never underestimate the NB seniority kick that comes from everyone else chasing the WB dream. I don't have any interest in doing WB flying either and made sure I went to a legacy.
That said, living in base matters. It matters a lot. It's worth A LOT of seniority. You didn't indicate whether you'd commute if needed from MCO or move to a base elsewhere but there are airlines with domiciles in MCO.