Answer really depends.. If you are motivated to get on with a regional airline, the sooner you earn your CAMEL, the better. The CASEL may not even be necessary if you can figure out a way to rack up 1000 more hours of flight time with your plane. However, you expressed that you have not flown AMEL in 3 years? That might be a factor in your overall proficiency and readiness to meet Comm PTS standards. Have a good debrief with a experienced senior MEI after a "multi-refresher" lesson. See where you are at and then decide...

V/R