Just coming back here to say that I did bring down the speed to somewhere in between 40 and 50kts on the next airstrip and the landing went great. Then I went on to finish the Bush Trip without problems.
Indeed, it was just a matter of pitching slightly up while descending to bring down the speed, while gradually extending the flaps, without fear of stalling. The plane came down gently and came to a full stop pretty quickly. I had airstrip to spare where before it seemed to only last a fraction of a second.