According to AAG's announced fleet plan for this year, ENY's MEC says they are set to exceed scope limitations in the number of RJ's by the end of this year. Unless APA grants scope relief (which I doubt) there's no way those 90 options will ever be exercised. Embraer is also going to be transitioning to the E2 version, which has a MTOW outside scope limitations as well.

We might see some of the Compass and Republic planes come to Envoy to replace 140/145's, but won't see any of the options unless something drastic occurs.