Hey everyone! I am trying to figure out the best coins to keep during 2018. I have done some research for the last couple weeks, what do you think about these?

BTC
BCC
ETH
LTC
XRP
STRAT
XMR
DASH
ZEC
ADA
BNB
CND
IOTA
NEO
REQ
TRX
WAVES
XLM

Is it a good idea to build a portfolio based with 10+ coins or keep it smaller?
Any feedback is appreciated.