We ©an $ee the pri©e now, $200 i$ on the way. ©2017
And totally your prediction wrong, now Bitcoin price stable at $800-$900 USD, $200 USD is to low and quite dreaming if you think will happen in short time, even the price down maybe only can reach $500 USD.
Buy more if Bitcoin price go down and keep for long time to take more profit.
Reaching the two hundred dollar range is a very unlikely scenario because the cost of mining is very high, and miners would be at a loss in such a scenario.
Even the five hundred dollar range would be improbable. This would only happen if users start losing their confidence in Bitcoin. I don't see any reasonable reasons for this to happen.