Ok, spreadsheet is done and my brain is fried 
But good to get it done. Now to make all the models and set them up in XL4 
Good - I did the same just a few weeks ago.
Take your time . Do the setup tab first and then create the models.
Do a few first , drop effects on them etc , then come back for the others.
You must ensure that the setup tab adequately covers (ie encompasses) what you define in the models, else it may crash when you try and save.
(for example , if the setup only goes to 2000 and u define a model that goes from 1900 to 2100)
In Sean's videos he just creates a large block in the setup and then does the models carefully (as the setup can be redone at any time) , but I preferred to get it aligned the first time.