I think there are some patterns where the kiai section is weak and doesn't match the tension of the song.
00:51:508 (2,3,4,5) - 00:54:125 (2,3,4) - 01:02:148 (1,2,3,4) - 01:04:066 (3,4,5,6,7) - 01:05:462 (2,3,4) - When playing these sections, I didn't notice much difference between them and the previous calmer sections. The patterns aren't as intense as they are in the song, and I think you could try making them a little more challenging by increasing the intervals or changing the flow.