If you have 5 Eth now, I recommend you to use it to buy in the exchange platform like in binance, okex, or houbi then choose among coins in there that are potentials like for example Waves, Neo, Omisego, Eth or Bitcoin it depends on you. Unlike, in the ico there is a high level of risk if you do it. But of course, this is still my tips of advise which I think is a good decision.