Nash & Neo3

will the release of Neo3.0 affect nash in anyway and would it be wise to wait for 3.0 to be completed before launch

It has no impact on Nash or the exchange functions. NEO is just another blockchain for Nash in regards to exchange functions so NEO 3.0 will be treated the same as ETH POS, when it happens Nash Exchange will support that blockchain. As well the NEX token will still function normally on NEO 3.0 so there is no need to wait or any present changes to make.