A large exchange will be relevant not earlier than the 2nd quarter of 2019.
If the project successfully starts, then perhaps such a need will arise earlier. In any case, we must wait for the end of the ICO. At the moment, the road map is formed and it is necessary to execute it.
I think that all investors are hoping for a successful start of the project, so they are thinking in advance about how to achieve listing on a large exchange.