Just placed a buy for 5k @13,000$ Was that a good decision?
it is ironic because the price was less than $13,000 just one hour and a half ago
You really missed that train buddy, or did you already bought?And it was less than $12,000 yesterday, because it just touched that all time high during yesterday.
If you are smart you are going to make a bunch of money, the price is still on big rally to get to $15,000 before 2018, so yes, you are going to make the most easy $2,000 that you have ever earned in your life.
Lets see how it moves.
Where is the train lol?
You will never know the output until it will happened. Is that a good decision by OP? Generally at any price level, anyone can enter as long as they know what they are doing and accept all the risks associated the moment they bought the coins.
And to your last statement, day trade? short term? I don't think it will work for now based on current price behaviour especially for an average bitcoiner as they are only increasing the risks of losing.