As a Bounty hunter I once made a mistake by selling tokens from Bounty that I received in a small market for $ 250. After 20 days the price of tokens that I sell is worth $ 1200. So the conclusion if you want to wait you will get maximum results. Believe every ICO project will prepare a good market in the future.
Early token sale is only suitable in the case of bearish market. In such a situation, it is impossible to see a significant increase in the price, so it makes no sense to hold the tokens for a long time.