In the previous room, gain max run speed without Speed Booster equipped, requiring about 7 tiles of runway (obtaining an extra run speed of $2.0). After the transition, jump to slightly less than full height, performing a lateral mid-air morph just early enough to avoid bonking the ceiling Grapple block. Pause to equip Speed Booster before bouncing on the first Grapple platform; this provides a boost in the bounce height to be able to make it to the Grapple platform below the top door.