My N-1, N, N+1 development times are (for simplicity) 5, 8, and 11 minutes. I use 4x5 film, hangers and tanks. I develop in a small bathroom. I don't have room to lay out all my tanks in a row at one time. My question is will it change the film to leave them in the stop bath for 7 minutes if I am developing an N-1 and an N+1 image in the same batch. My film development calibration is based on a stop bath of 1 minute.

I guess I could do a test: shoot a gray card for Zones I and VII for each of N-1, N, and N+1. Measure the densities and see if the long stop bath affected the N-1, or the N images. (I develop 6 sheets of film in a batch so I might as well throw in the 2 N+1 sheets, although none of the development has changed for them.)