I think that youre to late for the litecoin train this time, if you want to buy more litecoin then wait until it have falling longer down after last weeks pump. The price of ETH did good last week also, so you still made a good gain. I would either wait until litecoin have falling longer down, before it will do next pump. I still waiting for a good entry point for litecoin, I think it will do good this year, with a halving and as a privacy coin.