There is such thing as "item boosting", where the player gains a boost from an item. This can be used to optimise any chapter with an item in to my knowledge (unsure if coils work). Mentioned just finale and C3 in the title to make it short. Here is a video, I do NOT take credit for this.

I know you don't use any of the warps, however you still enter the area. I did 85 attempts, I think less than 10 actually got past the clip, none getting past Fun Fair. The clip makes the category unfun for me. You could also have just a glitchless category if you want

(using nestopia btw) occasionally, when playing a level it will refuse to let me jump in a certain spot, and it will keep doing that it's not my keyboard or anything since it's only in that specific spot, it has happened numerous times in numerous places

h e l p (please)