I would say buy low and trade btc. Use the markets and play futures and options to increase your btc. This is my plan to get rich. Options trading. Vanilla and Binary options!
This strategy will never work with Bitcoin, because it is such a volatile currency. After Bitcoin crashed to $300 from $1,000 in just three months, a lot of people started accumulating it. But the problem is that, even after 18 months, Bitcoin hasn't recovered to the pre-crash peaks. The exchange rate is going at $220-240 right now.