I think the short term investments are the best now. Because we see the high market volatility.. And as we talk about the coins, I believe in eth .
Because the market pumping with high value is approaching. Third quarter is near and it is expected and predicted like last year 2017 that market will crazily high, especially on December would be, so hold and be patient and be wealthy and invest.
Also I can recommend you try to use the trading bots in parallel. Just divide the part of the coins for trading manually, and part for the bot. You can to learn and earn at one time. For this using I recommend you https://tradesanta.com/en. It's easy and works well.