Please confirm my correct understan

Please confirm my correct understanding: you are going to ship the containers by two loadings and you doubt whether we need to divide all container volume by 3 ETD dates?or initially you plan to send all the October containers together?

The following scheme would be preferable for us:
To divide all October containers volume for 3 ETD dates (7 containers per 1 ETD date).
Please advise what will be these 3 ETD dates as we would like to understand the days difference between them to specify for you October ex-w POs in the order of priority (what should be shipped first and what can wait till the 3rd ETD date).