First schematic GMC Camper 1976 12V / 230V

Hi this is my first try on an a GMC camper of 1976.

Starter Battery is in Front right . Engine with Dynamo is placed almost in the front left . Distance from Dynamo to starter battery is 3 meter. Distance from Dynamo to the rear where the House Battery and Orion TR Smart is placed is 7 Meters . Total vehicle length 8 M .

Any input on improvements?