Any chance of a re-up on this?  The link is broken.

Before I start, let me say that I've used this little guy in a slightly modified build of Brawl+.

I'm not sure if you're trying to make a balanced character here, or just trying to put something new into the mix, but if you're trying to make him balanced, I could offer a few suggestions to that effect.

His Whirlwind Kick is very easily spammable, and can easily carry an opponent across the entire course, doing damage to them as he does.  Don't get me wrong, I LOVE that I can do that, but the people I play against certainly don't.  What I might suggest is attempting to decrease the move's priority, so that is it harder to successfully strike and get them into the combo (assuming you can do this with PSA), and allowing people to more easily hit him out of it.  However, it sounds like you're already aware of this, but hey.   

Something else I noticed was that it was very difficult to actually use his Hadouken in serious combat.  Once I knocked someone away, I could try and start charging it to hit them, but after I did so, I couldn't carry the move around for a powerful strike later on.  Most characters that have this kind of ability can charge it, keep it, and unleash it later at a more advantageous time.  I'm not sure if you can do this with Kirby, but if you can, I think he'd benefit greatly from it, and make him more well-rounded.  If its the damage factor you're worried about there, you could always make it a less powerful strike to balance out the ability to carry the attack.

Really, that's all I can think of for the moment.  The combo of his attacks only gets people up to around 30-40% damage.  That's 2 hits with Ike, or virtually any other character, so while it LOOKS like you're owning them hardcore, you really aren't, and I like that.  It makes it fair.

Anyway, I hope that helps you a bit.  Great work!  He's a fun character to play with.