My first gamemode was a spider because it is the quickest of the offered gamemodes, which helped me with the syncing, especially at the end of the part. I continued into a ball, since it's still good for syncing, but there aren't as many defined hard notes in the song as in the beginning, the notes are more wavy, if that makes sense.
I chose the UFO over the ship and swing, since it is the most responsive one, and it feels like you are contributing to the buildup in some sort of a way. I would be using the ship if it was a slow, dubstep drop, for example. I often keep the swing for slow-paced gameplay, so I didn't use it here.
I chose the Robot to be the final gamemode, since I can adjust the needed jump height based on the song, and as the song is getting to the pinaccle of the build-up, I increase the required lengths/heights of the robot to compliment that.