About ten minutes long.
I eyeball the wagon as holding a bit more than a cord, a cord being 8' by 4' by 4'. A cord of spruce is 4000 pounds. A cord of green aspen is 4500 pounds.
Things look a bit sporty at 3:10-3:20 with an almost full wagon, going uphill churning their way through lumbering trash.
The horses are not very tall but they are thick through the hindquarters.