Man that stage is hard! I really like it though. It's pretty fun.
I focused on the stage itself (resetting at Patchouli) and after some practice I can get to 20m with no deaths. Whenever I start to think about starting to think about going for graze or the get line then I just die instantly, though.
One thing that's worth keeping in mind is that a lot of the stuff in that stage is aimed directly at you and can be streamed. In fact, the not laser part of Patch's first couple of nonspells can be streamed. It makes it pretty easy to get a lot of graze in that stage if you know what to stream.