Hi there,
Hope all is well at your end. I have reviewed the requirements and would like to offer our Excel Programming services. We have very strong expertise in Writing macros, using inbuilt formula of excel to get desired results, on the other hand I would also like to know what you think about a similar spreadhseet that works on google docs? We can prepare a data entry form for you for the spreadsheets so that you just need to fill up the form and backend results will be worked out the by the formulas used.
Its just a query, same can be achieved offiline as well.
best,
Ankur