Just do as much of them as possible and forget about them. If they turn out to be worthless in a year or two, no harm done, but if you look at tron for example, those 500 coins ended up being worth about 150$ during the last bull run. What I do is I do about 10 of them each weekend. When they'll get listed on exchanges i transfer them there, set a sell order at whatever rate I think is achievable within 6 to 12 months, and I wait. I've been doing this since january this year and so far I made about 700$ already.