Now is latest time to sale your Bitcoins, because the price now is
more than 16 200 USD -
http://preev.com/. So you can make extremely good profit now, it is not wise to wait more, because Bitcoin price can go down.

I respect your opinion, but why do you think this?
At least give some reasoning.
It COULD go to 13,500 or it COULD go to 19,500
Overall trend has been upward...
Bitcoin price was going up all the time this year, it can not go up forever, so you can understand this. One day it will go down, so you must sale your Bitcoins at right rime.