Plenty of money for now. They will need some one day though. I'm sure Perilya and others would be looking on with interest. This is a major tier one resource already so will attract interest. I imagine all the big miners and commodity traders will be watching.
Pilot plant is possibly to let authorities who may not appreciate mining planning/processes see some progress. Might also be helpful to see some of the oxides out of the way via mining in prep for accessing transition ore and sulphides.