For me, investing all your savings to 3 cryptocurrencies you have mentioned is not really good idea. Why? because you cannot say what will happen the following days or months if the prices will either go up or down. It is very risky and the rates are flactuating. Also, what if something emergency that might happen in few days or months with your own personal life. Be proactive about uncertainties.
it is true what you mention, because if you are not experienced in investing, and the price of bitcoin and altcoin always up and down so as not to have a stable price, you should not be too confident with all this. but if you look at the potential long-term investment is better you choose bitcoin and ethereum.
The price going up and down is really not a challenge but the thing here is cryptocurrency coming to stay. The latter is something that is really becoming glaring, although it is still a huge risk to take. Most especially for bitcoin, it is growing pretty fast and then I thought one day that if I had really gone in with my savings even like 2 years ago when it was even more risky, then I can imagine what I would be worth now.
Life is all about risk and depending on how ready the person involved is willing to accept such risk, and then leaves the choice in their hands. It could pay them hugely and then it may not. But come to think of it, which do we really think is possible at this stage?