DAHLONEGA — A 400-acre winery and residential development near Dahlonega is scheduled for auction next month. Montaluce Winery & Estates was started last decade during the economic boom and stalled as the recession wiped out the second home market. The Tuscan-themed vineyard, restaurant and residential development was initially envisioned as a $300 million-plus project with about 300 homes, cottages and vacation rentals.