Based on the weather reported in Avherald and the charts (easy to find on the internet) the weather looked ok for the initial approach. They obviously had at least enough fuel for an hour (presumably enough to divert to Newman or wherever) as that is the time between first missed approach and landing on the fourth attempt. The mistake seems to have been in committing to the destination airfield. After that it may have been the choice between arriving below final reserve at their diversion airfield and busting a fairly high mda where they were.