Obviously jet PIC would be ideal, however with Xjet it is a around 18 months for the upgrade, not bad compared to EGL I know. I have heard rumor that Republic can be less, maybe a year in the EMJ, but I think in a year with BigSky I "could" have 1000 PIC already.
So again, spend 2 years at Big Sky getting lots of 1900 PIC time or spend 2 years at Jet Airline A getting jet SIC and hoping for a quicker upgrade than everone else because you didnt get hired with 400/50 and still waiting to meet ATP mins....