for Baobab alone based on the PFS, free cash flow of $70 USD per...

for Baobab alone based on the PFS, free cash flow of $70 USD per tonne x 1,000,000 tonne pa = $70m x 25 years = $1.7 bn over that period

Commercialisation of IHP would open up cost efficient production of SPA from Wonarah or Baobab which i don't think you could value the importance of this for Australia alone

"A number of shareholders and people close to the Ammaroo project have told ABC Rural the takeover bid made little sense."Two years ago I attended a food seminar interstate where it was pointed out that we have less than 20 years of phosphate reserves left," wrote one shareholder."Then we may have to import [phosphate] from Algeria, with all the political uncertainty that involves."
https://www.abc.net.au/news/rural/2019-03-14/foreign-takeover-bid-for-verdant-minerals-and-ammaroo-phosphate/10897974

I would be disappointed if ihp and the dfs for baobab aren't commercial. On the basis that either came through Avenira raising funds at less than a market cap of several $100m would be disappointing. the most recent analyst report valued avenira's share of baobab at $170m
https://avenira.com/wp-content/uploads/2017/03/Avenira_2017March28.pdf

As to what will actually transpire I am not sure, but have been banging on about the potential for over 7yrs now