1k dollars is a good value of money to start investing in bitcoin, if you have the money now and want to start investing in bitcoin, I think you'd better buy bitcoin now because the bitcoin price is stable in the last few days or you can start it at Altcoins, as the price of altcoins is weakening and it will definitely rise again.
Yeah buying bitcoins and investing in altcoins is the best move to make as altcoins have huge potential to give you best returns in quick time so if you invest in best coin then you can make really good profits in quick time and even holding bitcoin for a long term can give you good profits.
It's a known fact that some altcoins can bring you more profit than Bitcoin if you invest in them, especially in the short term. The question is which alts to choose? It's easy to lose all your money when investing in the wrong altcoin. Many people lost a lot investing in Zcash, for example, although it looked so good in the beginning. That's why I'd stick to Bitcoin, being no big expert in other alts.