should it be invested in bitcoin and hold?
or
should it be invested in alt coins?
and why or what will make it sustainable via etc vs. alt investment
i highly suggest go on something trusted and legit like bitcoins, put all your eggs in one basket if you want to get much profit on it because i see that you can earn more just by investing it all in bitcoins due to its high value thats still increasing overtime although some altcoins like etherium and waves are also a good addition to your portfolio and they had also a potential to pump soon.