Like the Nismoid, I, too, am unconvinced on the ability of a raised bonnet rear to assist in cooling.
The base of the windscreen is a high pressure region, which is how air gets pushed into the ventilation / heater system. I believe it is also why the old-school GroupA Fords / Holdens had that reverse bonnet scoop to feed the carburetors.
Air moves from regions of high pressure to regions of low pressure. The high pressure air at the base of the windscreen will be pushed into the engine bay through the raised rear edge, increasing the pressure inside the engine bay. This will reduce the pressure differential between the front of the car and the engine bay, limiting air being able to pass through the radiator. And if air doesn't pass through the radiator, no cooling takes place.
Put the bonnet rear back down (the way Nissan designed it).