Why not re-inevst into the coin from which you are getting this much returns!!
I mean if it capable of doing that then you can do re-inevst into it and wait for it to pump again. Well, if thats not the case then you can easily put your money into BTC/ETH. In the both pairs also I would suggest you put some extra percentage into the ETH alone as you might be knowing that there is continued hype of the ETH this year and they all speculate that 2018 is the year of the ETH. On top of this I would love to suggest that do no invest the whole amount altogether because it would be great if you put some money into fiat and save it. This will minimise your risk a lot.