Hello there i want to build up my portfolio in the crypto world...right now i have started with ether and bought 2 ethereums..every month i will get salary and i will keep building my portfolio and plan to hold them for atleast 2 years...right now my next targets are NEO and WAVES..because by holding them i can earn gas and can lease waves to earn more as well and also these are coins with good potential....Bitcoin is already too high..please suggest me some more coins which i should buy and just hold them or forget them for next 2-3 years