I'll be the unpopular guy: don't skip the regionals. Regional training departments excel at turning 1,500 hour CFIs into regional FOs. Training departments at heavy metal operators turn smaller jet pilots into heavy metal pilots. Not saying you can't make the jump from CFI to heavy metal, but at the regionals you'll get far more cycles in the actual seat to learn your craft, whereas at the big iron shops you could get 2-3 landings a month.