In my opinion by investing all savings in cryptocurrency no good idea, I think maximum 80% of all savings and other 20% keep on fiat. Because we need to keep Fiat for urgent needed, and when this happen and the price of cryptocurrency down then we should be  withdraw it. So that we are in loss. In my research good coin for longterm investment  is BTC, ETH,WAVES and DASH by portofolio 50% BTC and other 50% for those altcoin.