Too many coins to hold will give you problems. You have to invest in the coins that you understand and have good fundamental. I suggest you to study the coins John McAfee recommended. you can google
worst advice.. McAfee it is just a mercenary.. he will recommend everything for a few BTC's as payment
I think its bad advice to base decisions off what McAfee does as well and I dont entirely trust him. However, I think studying the coins McAfee mentions for the sake of knowing is important. I imagine hes smarter than to recommend a completely trash coin and trash his reputation, and since weve seen what his words can do to the market I think its worth it if you can stay ahead of the next pump whether its false hype or not.