I think that is a good way to start
The introduction should introduce your main character, setting, location and time. it should also either introduce the main complication, start heading for the main complication or foreshadow the main complication.
A proponent is a person who advocates a theory or idea, so the synonym of proponent is B. a supporter.
A tautogram
from wikipedia :
A tautogram (Greek: tauto gramma, "same letter") is a text in which all words start with the same letter. Historically, tautograms were mostly poetical forms ([1]). The difference between a tautogram and alliteration is that tautograms are a written, visual phenomenon, whereas alliterations are a phonetic one. Most cases of alliteration are also tautograms, though certainly not all since different letters can frequently take on the same sound (e.g., circle segment or Catcher Ken). Similarly, most tautograms are also alliterations, although exceptions exist when using letters with multiple pronunciations (e.g., crazy child or pneumatic plate).