1st exchange should be be https://novaexchange.com/ - there is voting there, Dev can add voting link to the OP and ask airdrop members to vote. TME can get there fast.

Next milestone can be should be https://www.cryptopia.co.nz, I don't know about voting, it costs 1 btc to get added there.
Also we can vote on https://c-cex.com/, it's a really good exchange too.

Bittrex might add a coin when it will perform really good (high volume) and this might happen some time later.

I think the voting is the 1st serious task for Timerium communit. Also we need to have slack and telegram chat. Community is one of the most important parts of the project.