I think that investing in everything is risky especially bitcoin. Dont take anyones advice about what will happen with the currency. Personally I believe we are just starting, just my own opinion and you shouldnt consider that as investment advice as well.
I think Never invest more than you are able to lose Bitcoin is a very risky investment and you should keep in that in mind at all times. especially the price Bitcoin is still going down this time.

If you really a risk taker then you can do this. There is no fix in this world even you yourself you cannot give fix date how long will you live in this world. Maybe if you want to have huge profit with bitcoin then try not to scared investing on it just read or make any research if you want in order for you to have an idea on when to buy and sell