In large bowl, mix 1 cup of the warm water, the yeast and sugar. Let stand until yeast has bloomed, about 10 minutes. Add remaining 1 1/2 cups warm water, the dry cake mix and 3 cups of the flour. Beat with electric mixer on low speed until combined. Continue adding flour, 1/2 cup at a time, until mixture pulls away from side of bowl. (You may not need all of the flour.) Switch to dough hook, and knead 8 to 10 minutes or until smooth and elastic.