CRJ FOs are staffed pretty well from what I hear. 700/900 FOs are a premium. Just look at yesterday's daily staffing rundown:
CREW AVAILABILITY:
CA: AVG CR7: AVG
FO: AVG CR7: CRITICAL
FA: AVG
and today:
CREW AVAILABILITY:
CA: POOR CR7: POOR
FO: FAIR CR7: POOR
FA: AVERAGE