Both invesment/trading strategy is great, you can do both.

In short-term strategy, traders must understand the risks and rewards of each trade.
They must not only know how to spot good short-term opportunities, but also how to protect themselves.

In long-term strategy, you have more freedom because generally speaking, long-term investing for individuals is
often thought to be in the range of at least seven to ten years of holding time, although there is no absolute rule. 

ideas credits to: investopedia.com