Do you guys have some form of guidelines about how far or close to the ICO you do these kind of analyses?

It's complicated :) We do have some guidelines and priorities we follow but we can't yet guarantee that the article will be published at any specific length of time prior to the ICO. Sometimes we learn about the project very late, sometimes a team doesn't know/provide an info until after the ICO an so on. We try our best to publish stuff that's still relevant and notify our readers when the ICO we are describing has already finished. Surprisingly for us, there is a lot of people who are reading our past articles even though the ICO is long gone.