I do something similar for my Canada collection in Lighthouse albums.
Stamps are listed with Scott # as they appear on the page - top to bottom, left to right.
I colour-code each stamp # in the last column as you can see - black for have MNH, green have MH, brown for have used, red for don't have, etc.
A useful supplement to my inventory in a software program, and very handy when looking online. You could easily tweak for your purposes.
