F1 Cash Flow Forecasts - Chapter 15 Example 3

I'm trying to workout the unit breakdown, but I keep messing up the calculation. I've tried finding the video linking to the question, but doesn't seem to be around. Question is below. CF manufactures a single product and is preparing monthly budgets for the first three months of 20X5. The cash balance at the end of December 20X4 is expected to be $50,000. The following standard revenue and cost data is available: Selling price $15·00 per unit Materials 2 kg per unit at $2·40 per kg Labour $1·60 per unit Direct expenses $1·40 per unit Sales in December X4 were 10,000 units and are forecast to be the same in January X5. As a direct result of marketing expenditure of $95,000 at the start of February 20X5, sales are expected to be 11,000 units in February and to increase by 1,000 units in each subsequent month. 30% of sales are paid for when they occur and 70% of sales are paid for in the month following sale. Stocks of finished goods at the end of each month are required to be 20% of the expected sales for the following month. Stocks of materials at the end of each month are required to be 50% of the materials required for the following month’s production. Materials are paid for in the month following purchase. Labour and direct expenses are paid for in the month in which they occur. Overheads for production, administration and distribution will be $32,000 per month, including depreciation of $10,000 per month. These overheads are payable in the month in which they occur. CF has a $500,000 bank loan at 5% per annum on which it pays interest twice per year, in March and September. Prepare the cash flow forecasts for CF for the first three months of 20X5