tbh they didnt say 4bn explicitly was the target was just...

tbh they didnt say 4bn explicitly was the target was just reference to one of the directors past experiences in working for a company, Acacia (i think it was the name) that had reached $4bn previously with a similar process of acquiring ex assets from Barrick... When they say they hope to use that experience to hopefully repeat the same success it was just an inference but not particularly the $4bn price tag.

But here is my rough interpretation of the plan to increase shareholder value (not $4bn strictily)
Short term:
1. Make sure to deliver on satellite pits transition
2. Make sure to setup Morila for mining
3. Lithium Deal

Medium term:
1. Exploring Morila and other nearby targets
2. Exploring underground potential
3. Explore regional targets

Long Term:
1. Consolidation strategy i.e. owning multiple mines

Obviously this is all high level but yes this is my interpretation of the plan.