Right aileron, always.
Just like in the video: Initially full deflection, and then reduce to neutral as airspeed rises.
If crosswind from the left, I initially apply power extremely carefully (at maximum 0 boost) until I feel that Ihave positive rudder control. Rudder trim setting maximum right deflection.
If crosswind from the right, I can initially apply more power (usually I seldom use more than +4 boost) and prepare for a combination of right-left swings due to interaction of crossind and p-factor.
Rudder trim depending on windspeed between 1.5° and 3° right.
Best is wind from the front, of course.
Takeoff with a tailwind usually leads to cartwheel. 
I haven’t flown the real Spit, but from what I’ve read The FlyingIron behaves more or less like the real one - at least the real-life procedures, power and trim settings work in the sim.