I'd just like to add that converting a product can take anywhere from 2 weeks to 6 months depending on the developer and the amount of content.
But that's only the start, it has to go through an internal review to make sure its completely compatible with Fantasy Grounds and doesn't throw any errors.
Then it has to go through a Steam review to make sure the content and advertising copy is acceptable. Steam can take anywhere from 4 days to 2 weeks depending on conditions (Steam sales can delay the release of a product for months).
The other key factor is that if we convert the product in house we have to have an available developer which is not always possible.
With all of these factors combined, we need at least 1-2 months lead time to convert a product for a KickStarter. In most cases we cannot get access to the files needed from the KickStarter project in time.