When to trade in the exchange?
It's traded on Waves DEX already. If you ask other exchanges, that should be after the distribution. As far as I know team hasn't revealed any exchange specifically.
Need to be patient

Waves DEX is a good tho

I think no need to worry about exchanges at moment, let's keep focusing on the distribution, in my opinion EncryptoTel will be easy to get in exchanges, lets say like bittrex maybe. I believe that
Now just smooth distribution phase. Then we can talk about the exchanges.