That's neat, Steele-bike.
I like the double wire basket idea. You can really haul a lot of stuff with those wire baskets. You can fill the baskets and still keep heaping stuff on top of the baskets like sacks of stuff.
If you have mountain bike rims, that is even better. My "freighter" bike is a 1973 Three-speed. It works well, but the rims are getting lumpy from carrying too much weight and then hitting bumps.