Before you are thinking about selling, think twice. Bitcoin can pump insanely high since the marketcap is really small and it can potentially go to 100.000+ per coin long term, so 600 to 1000 is absolutely nothing.
The next months will be fun.
I don't want to spoiled all great expectations here but manipulation back then is different if it will be applied by today.
No doubt that coins are much distributed today at "DIFFERENT" person today unlike back then where most of the people are big hoarders. Also no doubt that coins today are being used even it can only gives small percentage at bitcoin price.
We can reach that $1,000 positively but not on a sudden increase since Im sure many will dump at $800 , $900 range.
Just a speculation though.