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.
That's the hardest part in holding our tokens, sometimes the price will go up and sometimes it even go down depper than what we expected. ICO are unpredictable, so it's better to choose ico which has a real world use of their project to ensure a higher percentage that its price will go up.