If you start with 10K, as you say, it means making an x100. It was possible a few months ago with great luck. Today, it seems almost impossible... Unless you're doing day trading with a leveraged sale, but investing in ltc or eth and hoping to do x100 is too late.
Yes that is right that's why you have to find an altcoins which has a low market cap as of now and low circulating supply that you think has a big potential in the future because one news only it could go x5 or x10 maybe x100 if the news they launch are really so big especially if partnership with big companies out there.