After determining your winery is a wreck and you'll need umpteen repairs and thousands of litres of new cooperage, there is a way to make your life simpler.
Design a spreadsheet that hinges on tonnage.
If I can do it, you can too.
Create a spreadsheet that automatically calculates all your requirements based on grape tonnage received. This will allow you to see at a glance what your requirements are using accepted industry rates of addition.
How much yeast for the Joe Blow Vineyards Cabernet? Tonnage X average litre yield per ton X grams per hecolitre. That should do it.
Almost all of your factors are available in the catalogs put out by the suppliers around this time of the year.
If this is still trouble for you, drop me an email. I work internationally.