Goose Creek is my favorite early spring hike as the area generally recieves little snow. I have been as early as March 18th two years ago and there was no snow.
I too was hoping to make a Easter overnight trip but the weather did not cooperate. Hoping to make it up there soon. Would love to hear some more trip/trail reports.
As far as camp spots there are several once you reach the old mining buildings to the South and some spots past the shaft house as well. Last year we ran into snow just past the shaft house so turned back around and camped near the buildings.

