I have a portfolio of about 12, which I change depending on what pumps and what dumps, though I make a point of keeping about $10 of everything I buy, after taking my initial investment, for the long term... you never know what will come out on top in 2 yrs time!

I would highly recommend IOTA for the long term and I use Coingecko a lot to make decisions on coins that might be going places... It has a lot of very useful information as well as links to each project and social media chatter. Good luck with your choices. Upvoted and followed.