It will be cold. If it snows and this freezes there could be traction problems. I cannot see enough snow falling to warrant snow shoes. Instep crampons and axes could be needed. The main problem is the wind, especially above the treeline. All the spurs are exposed from around 1500 metres. Michell Hut has an entry about a party that had to crawl from the high point at pole 1272 all the way to the treeline, around 300 metres lower and 1.2 kilometres in distance. It may be impossible to move above the treeline. With a dusting of snow and fog it could be a whiteout. See this
http://www.bom.gov.au/vic/forecasts/fallscreek.shtmlOne option is to base at Bivouac or Michell, limiting commitment.