A Google search brings up plenty of information. For example, I found that one should budget at least 1 kW/ton of AC.
You can perform a Google search to find the answers for the well pump, freezers, refrigerator, and the washer and dryer. Model numbers for each load will allow for a more exact estimate.
And remember that when starting up these loads draw extra power (perhaps 50-100% more?). The generator can be sized such that it can start all the loads simultaneously, or it can be smaller with the chance that it will drop out if two or more loads start at the same time.
