John Flowers owns Keneally's Irish Pub. On the upcoming St. Patrick's Day, John expects a capacity crowd. John normally operates with four servers. Because of seating limitations, John can only add a total of four more servers to his staff for St. Patrick's Day. Each server costs John $12.00 per hour. His beverage costs are 25 percent. Each added server can generate an additional $600.00 in beverage sales per hour if they work a full 8-hour shift. Prepare spreadsheet that details the increased revenue, labor costs, beverage costs, as well as the revenue remaining after John pays his product and labor costs if he places an additional one, two, three, or four full-time servers on his St Patrick's Day employee schedule. What additional factors might John take into account before determining how many additional servers he should add?