I am thinking of upgrading but am a bit daunted by the idea of reintroducing all the modifications I have made to CCCalendar. Is there a methodological guide of how to do this the most efficiently? I imagine the basic order of things to do is to define Database Relationships, then Database Fields, then Scripts then Layouts. Is that right? Or is there something I missed?

I don't know that there is a common guide for this kind of thing. In my practice I like it when the layouts and scripts can be imported/ pasted without modification. This means I need the tables, graph, fields, and values lists in place first. The dependencies between table occurrences and fields is a bit tangled, but in general, I create the Tables, then the Table Occurrences, then paste field definitions into the tables, and then hook the table occurrences together to make the graph.

Its a bit improvisational for everyone I think.

Hope that helps.