the only problem can be with the katana handle if your printer didn't like a bit of overhang. In this case, print it in the original scale with the lower resolution that you can. i test print this model with layer height of 0.2 to 0.15, and with scale x1, x0.9, x0.8 . the Details in the katana surface will vanish with the reduced height/resolution. With the scale x1 and 0.2mm layer, you can print it in 4 hours.