I have to think a bit about this. Punk isn't known for lots of musical variation, on the other hand the song is technically punk-pop, so more variation is something to consider.
Straight out of the gate 76+ UK punk and Ramones style are constant but very fast.
Your song is much more of a pop punk song as you say...they do employ dynamics...loud quiet, faster/slower etc.
You could simply add an extra layer to the arrangement for the choruses..say a choppy piano or a 12 string...to add some dynamics or strip one of the guitars from the verses...the choice & options are endless in the mixing & BIAB provides all the options you'd like...perhaps just once before a chorus all instruments hit and hold a note/chord for a bar or even half a bar.