I want to buy a crypto coin. I don't have too much money. I want to invest something like 3k USD. Now I wonder what crypto coin should I buy and hold for almost one year. I want to hold that coin in this year, which is 2018 and I am planning to sell that in upcoming 2019. 2019 will be a big year for me, planning to get married

So please advice me and suggest me to the point.
Many many thanks in advance.
Btc is good for long term so now
Eth is good for long term but i think better to sell in high price or after it get high because it go so low every drop
Bcc for me is so good for investing because it can similar to bitcoin in the future if you think smart