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.
Thank you. Good luck to you, too ;-)