I usually run my air first, then all my bulk stops, then all my businesses. After that if I have to run a few resi irregs just to get some floor space I do that. After all that I usually have a decent amount of room even with 45+ packages per shelf, and I will use the floor as a second shelf for whatever shelf Im working on. Ill take about 1/3 of the shelf and put it on the floor labels up so if I dont find it on the shelf after having organized it, I know it gotta be down low and can look straight down. I usually try to put all the bigger or heavier boxes down low
Its a pain for sure though.