Overthinking basement flooding prevention?
Providing proper drainage outside combined with sealing is my preferred method. I have had walls that may have been close to what you have I dug down installed drains and backfilled with rock (no dirt) that home went from rivers on the floors to dry walls. If possible to divert the water before it enters it takes less energy to have a comfortable basement in the winter (sump not having to pump all the water out of the house that came in to me that made sense it worked quite well so over thinking it? No I don’t think so but this could be viewed as an opinion question.