Looks very nice. How was the process of getting a what you wanted from keyshorts?
This could also be done within the keyboard in QMK. Using combos would be one way. Sadly the Via GUI (keyboard.frame.work) doesn’t allow one to configure QMK combos. You’d need to either switch to Vial/QMK or add the combos directly into QMK. Despite the name of the Vial github, there are also files for the ANSI keyboard.