It looks good. I would have thought the sdkfz 250/9 armoured car would be more popular than the 253.
Will there be an option for the pistol port in the rear door?
The Military Vehicles In Detail 1 book written by Terry Gander (Ian Allan 2003) has a number of drawings and photographs, including views into the Ausf A and Ausf B sdkfz 250/6 hull for those who want to convert it. You will need a large number of ammunition boxes.
Besides its conventional WW2 usage, the sdkfz 253 would make a number Weird War 2 options, such combined with the Stuka zu Fuss launchers (I suspect the hull brackets will need scratch building). Now where are those air filters from the Tiger?