Just going to make a quick post about Kirby's customs over here, mainly the sets I use. I don't really agree with his current sets, so hopefully I can get some changes.
If you haven't read it already, go here:
http://smashboards.com/threads/character-competitive-impressions.367669/page-392#post-18559145
Anyways, going from that, here's my sets for Kirby (with short explanations)
3231 - Upper Cutter, Hammer Bash, Jumping Inhale, Stone. This is the main set for MUs that Kirby isn't as experienced in, as it has his best overall special moves.
3232 - Upper Cutter, Hammer Bash, Jumping Inhale, Grounding Stone. Same as above with Grounding Stone for specific match-ups.
3233 - Upper Cutter, Hammer Bash, Jumping Inhale, Meteor Stone. Same as above with Meteor Stone for specific match-ups.
1233 - Upper Cutter, Hammer Bash, Inhale, Meteor Stone. This set is made specifically for fighting Olimar, as Jumping Inhale has a glitch where Kirby gets latching Pikmin instead of his projectile-like ones. Inhale is needed, as the latching ones are worse in the match-up.
3131 - Similar to other sets but with Hammer Flip, mainly for going against Marth and Lucina, along with being there for those who prefer Hammer Flip (although Giant Hammer is usually, if not always better).
3331 - Same as above, switching Hammer Flip with Giant Hammer. Generally recommended for stronger punishes on shield breaks, but some may feel uncomfortable using Giant Hammer, or prefer using Hammer Flip throughout matches.
2231 - Same as above sets except using Ice Breath for specific match-ups.
2232 - Same as the above set with Grounding Stone instead of default Stone.
2222 + 3333 - Mainly for exploring Kirby's customs. I'd actually recommend keeping these for Kirby at the moment, as the only specials that are useless would be Inhale (except against Olimar), Final Cutter, and Wave Cutter. Everything else has a use, so it'd be good for experimenting.