Thanks for your advice. I have been constantly watching altcoins price in coinmarketcap, and I could say that when Bitcoin's price increases, they follow the same movement. Thus, I would prefer to hold the top 5 altcoins for the long term as they provide constant development and promising features. Dash has its unique masternodes feature, while Monero has ring signatures for better privacy, and so on. Speaking of Dash, it has been constantly increasing in price over the last days. It might go all the way up towards $100 USD, but in the meantime, I would keep mining and holding Dash just in case.
Another coin that has brought up my attention is NEM. Its offline harvesting feature is awesome and would finally allow me to stake my holdings without leaving the wallet open 24/7 (unlike most PoS coins). Just my thoughts.