Caledonia River exploring

I've been talking to Monash uni and they're interested in doing more overnight trips together.

The Caledonia River is the main tributary to the Macalister River, running down from the Howitt high plains. 

With a slope of 15m per km it should be similar in slope to the Upper Jamieson. 

The plan would be to turn this into an overnight kayaking trip.

We drive up Friday night, dump one car (2wd) at Glencairn and then drive up the Howitt plains and spend the night snow camping. The next day we get up early and drag our loaded kayaks for 10km. The first 5km will be an easy drag across the snow. The second 5 km will be an easy downhill drag to the river.

Day one we will be kayaking an unknown section, noting details for further exploration.

Day two is described as a nice grade 2 with the odd grade 3. This section has a gradient of 7.5m/km.

Absolute minimum to attend is a decent Eskimo roll.

Photos I've found online suggest some nice boulder gardens and rockslides.

(Let's keep the portages over logs our secret)