Hey Gabby, that's a lot of questions... you might have more luck splitting individual topics into more focused posts in the future.
I don't have any suggestions for the first three items because they're too generic, some screenshots might help clarifying what you're trying to do.
As for the timezone, if the export you're performing is a CubeView being executed as Report, then it might be doable with a CubeView Extender rule. If it's something else, I don't know, and again I would need more details. Does that help?
Cheers,
Jack