I pack my small tent in a front pannier just because I have the spare room to do so. Everything else in that bag, rain and foul weather gear, is allowed to get wet. I don't use the tent's stuff sack because it's oblong shape would not effectively fill the shape of the pannier. Any dampness from the previous night will travel one day with no ill effects and will evaporate in one hour after being set up that afternoon. That leaves just the sleeping pad with tent poles wrapped inside on top of the rear rack. Also one less chore for the morning, trying to roll and fold the tent back into its factory stuff sack which is always one cubic inch too small! The pannier is just a quick stuff.

Like Big Aura I like keeping everything in 4 bags without HB bag. If I need additional pannier space there is always the option of putting the tent on the rack along with pad. Just my personal preference but I prefer the visuals of items packed low in bags in a tidy manner rather than tied on up high when possible.

edit: gauvins, not sure I could get by with everything up front on a long camping trip. I like having room to spare, not just enough.