AC is taking 300 this year.
They aren't obliged to maintain the 80% from regionals. They will take a chunk but I doubt they will take 80, by the end of the year it will be getting pretty thin.
New hires are getting RP 787/777, FO EMJ/320/767 soon 737.
Seniority to upgrade to EMJ captain available at about 1 year. 320 captain at about 3 or 4...