Have come to realise that holding multiple altcoin is the best way to make it in Crypto and like the popular saying , don't put all your eggs in one basket, I like to always store differently
Not to many! make sure that you can monitor your holdings as many altcoins you will hold there will be also a big task to do.
There are some who can reach a good top and you might missed that chance.
Make sure that you have something like blockfolio or better if your holdings are on coinmarketcap so can you can check them everytime you need.