I think that altcoins have a good potential if you invest in coins who have a good project etc. You don't need to all in i would spread my money in coins where i know that i can get it back.
You can also just buy bitcoins only because we can see that its now really high.
I speaks like the share market investors bro. You should have the knowledge whether the concern coin you have invested will be there a great potential in future or not. There are many people blindly believe that new altcoins or ICO to invest their hard earned money. But once they launch the coin in the market place value is pretty lesser than the you see the token sale equivalent value.
If you have really concern about making profit in crypto currency platform, you should buy the bitcoins with all the money you have.