In addition to just winging it or trying to execute the 402, I've found a few different approaches of handling this level reliably with minimum difficulty.

First up is a 361 from a year ago- there isn't much "one attempt" timing involved here and you can always save the level with careful rams.

Secondly is a 370 from today- a little more of the level is choreographed and it shows a more timing intensive method of dealing with the start and end areas.

Last is a route capable of 376 with all waits and slide delay bits planned out. You can drop moves throughout the long hallway and still make it, but this is definitely more prone to failure. That being said, it's still easy enough that I'd feel confident using it in runs.