Are the side panels on your bee boxes just 1/4'' thick?
The wall is foamed plastic andvery insulating. The thicknes is 30 mm = 1,25"
There in two deeps with 20 frames most of them still full of honey. Your Thoughts would be welcome
If the hive has too much space and food, it wastes its energy. The hive needs all energy to keep brood area warm over night and rainy days.
The hive need all the time 2 full food frames and the rest are for brood. In good days bees forage pollen and store it just next to brood.
If the brood area is too full, it makes early swarming and swarming is poison to honey yield.
You may give food frames later to the hive, to nucs or to swarms. It depends what you will have.