put up this video of me skipping the furniture tower via launching up from the cardboard boxes and up through the little hole before the orange. it seems like a viable strategy, even if it's pretty hard to do.

edit: seems like you can launch yourself right up the hole from the lamp, instead of trying to fit the hammer in there like i did in the video. in addition to that, you can get your hammer directly on top of the roof after launching up from the boxes for another timesave, but i can't get it consistently at all...