How do I balance this properly? (Read Desc)

So uhh, here are some things I should probably clarify: -It's a memory level -The ship part is supposed to be picking your own speed, picking a faster one than intended gets you killed for speeding, picking a slower one gets you killed for not having enough speed to slam through the wall (last one is an exception, with the slow speed not having a wall.) -The wave is supposed to be this disco setting with blocks on the background and a few structures here and there, The background flashes correspond to the killblock currently toggled