In the tracker sheet for Toronto that I maintain, I have added a projected date for all those who have Ack. Its a best case estimate, so interpret accordingly.
Until we have a clear idea of process times for entry visa, it is hard to suggest a course of action. Unless it is substantially less than OCI processing times (like 2 weeks instead of 45 days) I see little point in applying for entry visa for those currently waiting for OCI with tight schedules. Either way you may have to postpone the trip if OCI doesn't come through in time, and leaving the passport with the consulate only complicates matters.
Until we have a clear idea of process times for entry visa, it is hard to suggest a course of action. Unless it is substantially less than OCI processing times (like 2 weeks instead of 45 days) I see little point in applying for entry visa for those currently waiting for OCI with tight schedules. Either way you may have to postpone the trip if OCI doesn't come through in time, and leaving the passport with the consulate only complicates matters.