Your decision is very good. But do not overdo it and can drive you crazy to buy all altc without thinking long enough to cause harm to you. You have to buy alt which has good specifications and potentially for long term and make you profit.
That's good decisions better to buy altcoins which you really think you can gain good at all. Just buy when price is cheap and never sell when still in a low rate. However, when price drops good to buy altcoins only that can grow.