If living in FL is high importance for you than stay at JB and apply to AA and get to MIA.

If not, sprint to UA. You're 32 with nothing rooting you anywhere from your given factors. Yes risk is inherent everywhere. But stay at B6 and be "safe" but stagnant or have lots of options of at United and make more $$$ regardless in the long run. I'd venture to say if UA is furloughing, you'd be furloughed at B6 as well. Me, I'd rather be furloughed, mid-thirties on UA's list than B6's with Ichan's nose in the tent and financial uncertainty going on. Good luck!