When you decide to hold or sell Altcoins, I think you should consider your actions and timing appropriately. Keeping the Altcoins at this point will likely be possible to multiply 3 or 4 as normal.
The best timing of selling is when you are making profit on it and should be based on your target amount so you will be satisfied.
Holding can give us profit even 100 times but be sure you are really for a long roller coaster ride because you will witness the upside and the downside of the market.