There’s no decision to make until you have a CJO.

Step 1: Apply.

Personally I’d have had my app out to all of the majors this entire time and would have bailed from the ACMI at the best opportunity, but your own circumstances may be a lot different than mine. You questioned whether you can stand cargo for another 30 years, so it sounds like you already somewhat know your mind.

The longer you dither the more seniority you’re missing out on at a major/legacy.