I think bitcoin will grow more over time. The best way is to get bitcoin and hold until you think it grow enough. But this is just my opinion and please remind, invest only money you afford to lose. On the other side bitcoin is a good instrument to pay and make payment secure.
Future is great for Bitcoin but we do not know what will be ours, for this purpose we should focus on our investments right now so as to make a position in the market and wait for the price with patience. Some people think that value will increase in the upcoming two months but some people are hopeless, the reality is that we may get high value in the next week because we should understand that Bitcoins value does not depend upon time but on several market factors.