You should invest in little amounts if you dont want to loose maximum, this market as of now is uncertain and it can take a very long time to see some profits, there are too many tumors in the market now, market makers and big players screwing the market, if the market goes up and you are happy with your profits you should convert it into profits in order to invest if the market falls lowet, this happens all the time, try to invest at different prices every few weeks and average down.