One thing to keep in mind is that you definitely don't want the radiator to sit higher than the top of the cowl. This will be very noticeable at a glance when the car is viewed from the side. Your work is looking nice, but get the car in a position where you can back off a good distance and look at it. The proportions will be very apparent when viewed from a distance.

I understand your desire for the mech fan, but the overall look of the car may override that.