I'm trying to see if its possible to complete this run with only getting 1 star (Board bowsers sub) and I think its possible, but the only problem for me right now is the star door getting into the final area. the area is too small to build up any speed with your wall kick, and you can't blj like in the regular games. any suggestions? I have successfully clipped through the 8 star and 30 star door.

Video showing the clips ive done so far

I just got through the 50 star door, will get video soon. Trying Endless Stairs.