When I worked those early shifts, I'd hop into my truck at 5 a.m. when the temperature was way below zero, and the cabin never got warm quickly enough. Heated seats and a warm steering wheel kept me sane, so now I see them as essentials
The truck is all about accessories, so heated seats will be availale if you want to pay for them. Don't froget, this is all about keeping it under 20k, so expect it to be as basic as possible