You should wait until the first patch, before starting something like this. We found a bug, that causes units to not reconstitute, and that would be a disaster for FitE. Though...it would cut down on the micromanaging a bit after the first year, or so...
Scenarios that are smaller time scales, like 20 days to 4 weeks, should be minimally affected, given the amount of time that it takes for units to reconstitute. In fact, some of them might even play better!
Sorry about the inconvenience, we hope to release a patch to fix this, asap.
Finally, thanks for your purchase.