If you're doing 3 of the sculpting, I'd recommend the Chiselmeister, Master Sculptor, and Prolific Sculptor. Do 5 of the clay, then wood, then metal (make sure a shower is on hand!), then ice, wood, stone, and topiary. In the course of doing so, you'll complete Chiselmeister, then Master Sculptor, and then Prolific Sculptor by the end.