After watching the episode, I did ponder over the fact that why not north and south, why north and west?! Unfortunately I was too busy to search up but after reading your analysis, it's quite clear!
The track is progressing since February but at a snail pace! Slower than the snail at times but it's progressing!
I agree with the fact that the storm will be coming from Khushi's side and even when a person is not used to search in depths of context they could easily pinpoint this fact because khushi's frustrations are evident in her antics! I think the creatives are going to take almost the whole of may to clear up all the misunderstandings and like you said that the repentance will start on ipk's anniversary, I agree to it!
Arnav journey back to Khushi will be a hard one though! Not just Khushi he'll have to handle the truth with both the families as well.
As for Khushi going back to RM, I think she won't! The CVs didn't bring the truth to Gupta's for no reason!
Waiting for rant to update, will add more!