improve on my existing excel estimating solution

have created an Excel workbook that connects to an Access DB. It pulls the labor and material and other information. The sales agent will review the plans and determine the SOW for the job and preselect the material for the estimator. After the estimator completes the takeoff and enters the quantities it will automatically calculate the labor and material cost, then add any taxes, commissions, markup etc. to determine a total job cost.

This should automatically create a material list and proposal to send to the customer. My office manager will manually enter the material list into QuickBooks and email to our supplier.