I don't think YPOK would meet any criteria for night operations due to significant terrain within 3nm. That is you could stay within 3nm and still hit terrain 1000ft above the airfield. The ridge line covering the entire western aspect is above 2000ft and just over 1nm from the runway, to the East is not much better.
Pretty sure there will be no ATSB report, GA, no fatality, no interest.... They won't even investigate an airline that's had 4 engine failures in a few months.