Alright, I ended up going LWWWWWL (first loss was 1-2, all wins were 2-0 and the final loss was 0-2), barely losing against a Ness both games and ending up at 14th place in the standings. Getting knocked into loser's bracket right away by means of ganoncide was awful, but I managed to not get too dragged down by it and am happy with how I managed to perform afterwards.
It looks like my local scene isn't used to Pac, so I was able to annoy them quite a bit with my zoning tools and securing kills with smash attacks. Now that I've stepped up my smash attack game I no longer feel all that bad about Pac's killing capacity, since both fsmash and usmash are great for securing KOs at high percents without opening myself up all that much.
All in all, I'm quite happy with how things worked out for my first tourney, even though none of my matches ended up being streamed. I managed to get some really cool kills that I wish I could've saved somehow...
Oh, by the way, I think Karst might be interested in watching the stream once it gets archived, since there were two fairly good Bowsers in it. You probably won't need the audio since commentary's in Spanish, and the streamers chose to show maches where their friends were playing, so I heard from my cousin that they were quite biased.