actually, I agree that it's not a good investment if you are 100% not sure that it is not a scam.
anyway, if you will consider investing in ico, then the best time is the very early stages (% presale bonuses) and when the crypto exchange rates go down (you will be able to get a better bonus + earn more when rates go up along with the token you've purchased. Don't forget to read wp, check if there is soft cap and smart-contracts
thnx