As we are doing on ko-fi, there is no "official deadline". We are planning to reach this goal by the end of the month, if this goal is not met, we will still try to raise the minimum possible to be able to pay the voice actors (only the main characters) and the composer and move forward with the project as best we can.
Also whoever buys at our shop (physical/digital product), we will provide the product no matter what the result is : )