I think these questions got no real answers. If there is any regulated answer it has to be dependent on that situation. There is no exact time to enter market. No body could say this is the best time to enter the market. Yes you could gather information all around and detect the future by analyzing the token's characteristics. It is never past the point where it is possible to put effort and capital into cryptocurrency, in light of the fact that everybody comprehends that the development of cryptocurrency is inescapable. It is a long process.
first of all welcome on board, and please enjoy staying in forum, honestly there are some posts that are repeatedly makes all over the forum and as you said, and thats true that there is no real answer for that, the only one things that sure is "anytime you can enter the market" even you are a newbie in this field, but there is no exact time on when to buy and sell your coins, because of the volatile of the market for each every coins.