Am I doing this right?

This project is over the course of 4 years. You will need an investment of $5 million in year 0, $2.5 million for equipment, and $2.5 million to produce inventory for year 1. Depreciation is straight line over the 4 years, and the new equipment purchased is sold at the end of the project for a salvage value of $250,000. Fixed costs are $500,000 per year and the variable costs are 25% of sales revenues. Total inventory produced will be 85,000 units. Sales for year 1 are 15,000, year 2 are estimated to be 20,000 units at $200 each and Year 3 and 4 at 25,000 units at $125 each. The estimated tax rate is 35%. There is a 30% chance that the Economy worsens by Year 2. If so, sales are estimated to decrease 25% less than the previous year each year with no change in price after year 2 and inventory to be liquidated will be at a loss of 25%.