How to fine-tune jitsi for a about 300 rooms of 30

Dear All,
Before moving to Jitsi as a Service I would like to try by ourselves how to host such traffic. I think we should take into account into the following facts:
-Reducing the video constraints in the config
-Reduce also the MaxBitratesVideo
-Increase the number of JVBs
-Increase the BW of the JVBs
-Monitor the load of the jicofo/prosody service
For the above do you have some concrete recommendations? Also please add some factors we also have to care of
Many thanks