@chekmahir, so here is a thread about a comparable hospital: ‘OpenMRS considerations for large hospital.’
This thread was the subject of the 2016-11-09 Design Forum, see the minutes here.
I am not sure if it would be necessary to discuss your implementation specifically as I suspect that the conclusions would likely be the same. The bottom line being that it will require horizontal scaling (JVM clustering).
Please let me know your thoughts.