Purple Swift manufactures birdhouses in lots of 10. Each birdhouse takes 45 minutes to paint. After 10 birdhouses are painted, the company switches paint color which requires a one hour changeover. The company works 8 hours per shift, one shift per day, 220 days per year. Currently the company has one paint booth. What is Purple Swift's paint capacity cushion if it builds 2,000 birdhouses per year?