So i went ahead and gave it a go this morning:
-Vacuumed everything thoroughly
-Steamed whole interior, not intensely since it's a vehicle i've been maintaining , just used the jet nozzle and applied steam to every surface followed with a MF wipe down to dry things up and pick up anything loosened by the steam.
-Removed all personal items from vehicle's interior(including glove box compartment)
-Set the unit on the rear of the back seat's center fold-down seat/console and ran it for 30 minutes.
-Once the timer finished, i removed unit from vehicle, left all doors opened ,set up both of my fans and hit the interior with fresh air for about another 30-40 minutes as i was dressing the exterior trim/wiping LSP off/dressing tires etc...) .
The truck smelled like a fresh new car when i was finished with it, so i was pretty pleased with the immediate results. I explained the process to my client and asked her to give me her honest feedback on the smell of the interior next time she gets in her car to drive it. This was a freebie for her since she allowed me to test this with her vehicle, she's in my same neighborhood and has been a very good happy customer so far.
Next up i'm going to talk to my immediate next door neighbor which has a minivan,2 kids and a large dog

. That one will be fun.