It's absurd to think difficulty drives price.
The supply is increasing at a constant, known rate. ~ 300 coins per hour average.
The variable is demand.
How about shorting (i.e seling and rebuying) rather than buying straight away?
That's not shorting.
Shorting is a gambling that the price is going to fall - you sell shares you don't have at what you think is the "high" price, and you have a certain amount of time (based on terms you have with your trading house) in which to buy shares back to cover your short position. If the price drops as you thought it would, you win. If the price goes up, you take it in the shorts.
