I think short term or long term investment depends on your expectations of profit! If you reach your target price in the short term, you can sell it! If you are flexible enough to suggest you do band trading! That's the highest income!
Exactly, depending on how you interpret and achieved your goals, long or short will always be relied from how the market grows, if you believe that ripple will bring you a good earnings then better set your targets, either you get it instantly or you need to hold and wait.