Playing it all again, I take back what I said about the SMWC coin room. I beat it on my first try. If you just blaze through it without stopping, it's pretty much impossible to get hit. If you dawdle a lot, then it becomes a challenge. I also finally found the second SMWC coin (really clever hiding spots for these, by the way). As for the incinerator portion .. took me three tries, but I got through it. That last part is a lot better.
I'd say you're good for clearing.
I'd say you're good for clearing.