I think hodling most of your portfolio in about 3/4 coins is a good way to see 3x/4x quickly, you just need to pick decent projects,

Currently I am hodling

WTC
XRB
PRL
ENG
SHIFT

I will be moving into ETH and XMR as they will pump soon I believe

I recommend these coins, will see nice returns I think. Choice is yours though, its your money at the end of the day.