I'm pretty sure jumping through a ceiling should cause a headache or two. Still, I'm through one faster, and overall now have Stage 7 done 4 frames sooner.
The intentional 8 frames delay between s7 and s1 is also removed. Going through Stage 1 again, I've started it 12 frames earlier, which is 1 and a half dialog frame rules. We were delayed half a dialog frame rule to begin with, so we started the boss 2 dialog frame rules ahead, and so I leave Stage 1 with 16 frames advantage.
That 16 frames advantage is tossed away in the delay between s1 and s4. Stage 4 heavily uses Flame Charge. Item drops are critical.