The diagram actually shows 75kts departure to the cross-wind leg position.
Full throttle, and you’ll have to experiment since the attitude indicator isn’t really good at showing the pitch position if you’re using the standard POV from left hand seat. Basically you want the pitch to be between first and second pitch lines from the artificial horizon line - where the brown turns blue - much like my avatar.
You can try to switch to instrument view, but probably not a good idea until you’re used to flying without outside reference - that comes later and actually not really with any of the lessons.
Flaps to take-off is first position down from fully retracted. You’ll want to verify that before releasing brakes.
Let the speed build up to 55 kts before pitching up (pulling back), but remember not to overcorrect, you want it between first and second lines, that requires a steady but gentle pull and you might need to push down a little because chances are your pull back will be too much. Just like IRL for any student pilot. 
Maintain that pitch and you will likely get up to 65-70 kts passing 500’.