To your points, effective car camping tents have one critical characteristic:
A good rain fly. Tents without one WILL leave you wet, either via leaking or by trapping condensation. The fly enables the main tent to have lots of venting screen. And a tiny "beanie" on top of the tent doesn't count. A good fly runs most of the way down the side wall or at least protrudes enough to keep rain off that side wall. I've never had a bad Kelty or Eureka, for what it's worth.
If the sleep pad will ONLY be used car camping, get a nice thick one. The 1" backpacker models are about weight limitation, not comfort. Buy him the 2" luxury one.