Okay, let's do the maths.
Cash on Hand at 30/06/2017 (FY 2017) - $121mln
Cash on Hand at 31/12/2017 (FH 2018) - $240mln
They have effectively doubled their cash reserves (or 119mln) within 6 months. And assuming similar growth rate you think they'll be holding close to $330mln ($240+$90) at the least as at 30/06/2018 (FY 2018).
Out of $330mln available, they've spent $162mln to take further stake in SML. That leaves them with $168mln on hand.
A 5c divvy would see an outgoing of $36mln and 10c would be around $72mln.
Say, if they go with 10c divvy they would still have further $96mln ($168-$72) to spend on other things plus ongoing addition to cash reserves as they sell more.
In summary 10c is feasible and very affordable for company, should they decide to pay a divvy. Guess it depends on what Board sees best value for shareholder funds.
Not long to go to know that, another 16 hours or so.
PS: Hope my numbers make sense and are correct. Happy to be pulled up though.