@buttwink I hope all is well man, sorry I missed this! Your plan seems well thought out, give it a go for a few weeks and see how it works for you. It you're going with maintenance 5 days a week, and a big drop on low days, I would guess you should see some slow and steady improvement. What is your training/cardio like on the 2 off days?
My current method on my prep isn't traditional, but it's working very well for me. Experimenting, trial/error on your body, is key for long term health and success with your physique. Make sure to keep us updated with your observations!