Beardy, suggest you may want to have a look at the recently posted Euroz Hartley's report on the BCI website at - Research - BCI Minerals
One of the many tables from the report is as follows - BCI won't reach full annual production (Salt only) until FY28, probably more likely FY29, both of which are not shown above.
So the biggest change to your figures is the number of shares on issue at that time, as the CN's will more than likely be converted.
Also refer to the most recent Investor Preso (Page 15), again from the BCI website (Home Page link), with the following income projections -
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