Your choice of altcoins is a good one but buying ethereum with all your money is not a sound investment as you have no fallback when ethereum price drop. With cryptos you can never really predict whether your choice of coins is a viable one so to minimized your losses and to have a good chance of profit try to diversify your investment into various altcoins like putting a portion of it into bitcoin or neo (my choice) in that way you have an insurances that if one of your investment fails then you still have a chance to get it back as you have  investment on other coins.