I have used the same 24cm length handles on my cupboards & draws but I think it depends on the cupboard/draw layout & style of handle (mine are black). The gaps are much wider than the handles so you don't really notice the difference between the different width draws/doors.
On your other thread someone advised using tape so you could visualize the handles prior to choosing, I think this is the best idea for you since you have your kitchen in place
I would want even gaps if using different length handles.