Is spreading out what is left of my money in a few ICOs a good idea?

Also, I was wondering how much do you need to wait until the token is listed on an exchange? On my watchlist I have GoNetwork ICO, Effect AI (neo) and perhaps something else. From the looks of it, I would need to wait 2-4 months I suppose.

Also, anything to look out for? Besides team, whitepaper and such.

Thanks in advance.