I double the question about the time between sensitizing and exposure.
The same about the time between exposure and developing.
…not with too much hope, anyway, your question is 10 weeks old and none of the professionals had time to answer.
Probably is such an obvious thing that is not worth the answer.
Anyway, if you happen to pass by here or get notified of my answer, and already found out the answer to your question, please let me know too.
And when you ask about the differences between the bromine/iodine plates vs. only iodine, do you mean in terms of losing speed time and delay developing, or just appearance?