Today with bitcoin at $850 and climbing and well over ten million btc in circulation there is no moving the markets anymore. It would take tens of millions of dollars to really move the market these days and even then it would probably correct itself right away.
A one-time sale of, say, 1,000 to 1,500 bitcoins can definitely move the price. I'm afraid you are overly optimistic about the liquidity.
But you don't say by how much you can move the price with this amount of Bitcoin. If it is just a few dollars, then it is surely not even worth mentioning. On the other hand, I don't think that you will be able to move the price for a hundred dollars with so many (or so few) bitcoins unless the price is already going down when someone is selling a heap of coins or demand is shrinking on its own. And how many people actually have that much? This is kinda like a million dollars...
In short, there are too many factors at play to decisively claim anything