Well if i were you i would not put all of my money into only one coin. Ethereum will be good you are right but you can make much profit if you put your split your investments in couple of high potential coins.
This is the right thing to do a decision where in you are able not to put all your profit in just one basket cause the right thing to do is you have atleast more basket that you can have a choice for. There is some altcoin that has a potential just pick the best.