Alright, we might be able to do something like:
1000 lifts is the base
+100 if X is true
-100 if Y is true
...and so on.
I don't think he works this way though. When working with students he'll adjust weekly depending on how things go so that he dials it in exactly on what is needed depending on the individual. Of course he has to start somewhere and make an initial guess. That's why he wants to see some training history first. If someone was doing 500 lifts per month he won't give them 1,000 to start with, maybe 600 and see how it goes with adjustments as needed.
People just starting off with this should probably do the same thing. Count up the previous month's work and plan the next month accordingly depending on the desired effect. But yeah, thanks for pushing for something concrete. Sometimes leaving it too open ended doesn't turn out so well either.