Is it a good idea in your opinion for me to wait for ethereum price to increase so I can sell it and move the money to more alt coins or should I just move the current amount of ethereum to other altcoins right now? 
It is good to hold Ethereum as it was the most trusted Altcoin therefore i could say that there is nothing wrong if you will do this kind of strategy as seeking for other opportunity by investing to other Altcoins is a good idea as long as that choosen Altcoin has the potential too. If the Ethereum will become expensive in the future then for sure you will be able to create more Altcoins investments from Ethereum earnings.