Thanks for this information Doraki,
This whole time I've been 'ledge walljumping', or at least I thought I was, by dropping down, then double jumping, and then smashing away. Because of this inefficient method, the only thing I could do was wall jump shine, which isn't as useful as the techniques shown in your wall jump video. With the real Ledge Wall Jump, I will now be able to preserve my double jump, making it possible to use any aerial while in the air. And for Falco's, you can use the Down + A to spike. You are the best. Thanks for this amazing technique.
I have one question though: When you ledge wall jump, in the video, you'll notice that you are invincible for a short time while performing the wall-jumped aerial. My question is, is this the invincibility from hanging on the ledge, or is it from wall jumping?