Oh man that one is awesome.
If you are looking for more to do, I recommend:
World 5 Warp Zone: Sunshine Island 1
World 4-16: Bow
World 2-7 Darkworld: The Moon
World 3- Warp Zone: Cartridge Dump 3
World 3-5 Dark: Wasp
Sorry If i got too demanding! Do whichever ones you please at your own pace
I really appreciate these Edit: So does edmund!