One thing I keep going back on that I find very concerning is...

One thing I keep going back on that I find very concerning is the extreme cost blowouts.

I mean they have already run over budget by $9+ million. What if the DFS has been completed but just didn't stack up financially due to the company being out with their estimated costs leading into production.
If the company is not economically viable where does that leave us? Obviously as they're stated they're working hard to add additional resources to the project to make it stack up, we really are in quite a high-risk situation.
Anyway, just thinking out loud. I think I'll just sit tight for now and wait for some more confirmation before adding to a position.