... , wearing a pink carnation and sitting at the bar. I can't wait to meet you in the flesh after all this time.
should it be pił instead to match the masculine adjective and noun?
"pił" doesn't match the noun phrase. It has nothing to do with the object. It has everything to do with the gender of the subject of the sentence, which is "I".
A woman will say "Będę piła", a man will say "Będę pił". Alternatively, both can say "Będę pić".
Well, treat all the sentences as if just 'being read' by some voice, then the gender doesn't matter.