with how the vocals go, i think you could make the breaks happen right after the vocal stops for each verse, it would give it some nice contrast for them and it wouldn't necessarily mess with your rest moments (it's something you even did for 01:43:058)
00:18:352 -> 00:18:793
00:21:882 -> 00:22:323
00:28:941 -> 00:29:382
00:32:470 -> 00:32:911
00:36:882 -> 00:37:323
00:43:058 -> 00:43:499 etc