I wouldn't start over with AIO. There isn't any reason to. Do a full detail with clay and swirl removal in the spring and then just ride the shine of SG and your carnauba toppers till the fall. The whole purpose of using a product like Klasse is the durability. You don't need to start over every 4 months. I wouldn't really imagine it is necessary more than every 6 months.
I would do 2 or 3 layers of SG and then let that ride for 6 months with a carnauba topper every 6 weeks. That would be my suggestion anyway...