Clippers on the privates and pits, watch the sack and may need a guard.
Other than that, yup, whole body...being Italian in Az is no fun with body hair.
I use the girl shit, Skintimate and Venus (easier grip in shower) on arms, legs, chest and abs once a week. Been doing it so long, no rash or ingrown hairs. Something in the Skintimate that helps with that. Never had the back hair issue luckily.
Highly advise if you have quite some growth, take it down with hair clippers first, see how you like it and go from there. Nair tore me up and did make me rash. Only at contest time will I then use razor on privates and pits, then back to clippers...
wow, sounds kinda gay now that I re-read this...