RE your question: "Living in black bear country, is it appropriate to put all my food, clothes worn when cooking and toiletries in a bear bag, suspend it in a tree, do the cooking 100yds, cleaning 100yds, storing 100yrds adjacent, and sleep with my pack in my tent...use it as a pillow?"
My personal answer is as follows (but please take it as just one person's opinion who hasn't been attacked by a bear, yet, so search BPL and other sites for views of others, plus getting out with other experienced folks is good, too) --
Yes, hang your food, cook kit, toiletries, pipe tobacco, and anything else with bear-attracting odors (I don't include in this category the clothes worn while cooking/eating, unless there's food spilled or dribble onto them, in which case guess might want to hang them, too).
I don't spill food on my clothes cuz I don't want to have to hang them, and I clean my beard real good cuz there's no way it'll hang comfortably while there's life in me.
As for hanging your pack -- for me, it depends on whether I've been careless and let a bunch of food, or other things with odors a bear might like, pollute my pack with said odors.
The odor-polluted-pack-problem can be avoided/mitigated by keeping that odorous stuff in odor-proof bags (I use OpSaks).
My pack ends up under my legs, providing cushion & insulation, not under my head.
As for cooking, cleaning, and storing bearodorous stuff away from campsite -- yes.
The one bear encounter I've had in my campsite was when a momma bear first managed to reach my 10' high hanging bag of "odorous stuff" and rip it open like a pin-yatta, slobbering all over the jerky, ripping open all the packages of freeze-dried food (licking everyone of them cleaner than a whistle), and then wandering with her cubs over to my pack (which I had left leaning against a tree near my tent) to sniff the pack over real good.
I watched her check my pack from the safety (???) of my tent, about ten feet away.
Not finding any odors coming from my pack that made ripping it apart worth the effort, she lead her cubs off into the woods to find some other campsite to maul.
Guess the momma bear didn't catch any attractive odors coming from inside my tent, either, since she never even glanced my way.
That bear incident, which is the only one I've had, happened the first (and last) time I backpacked in Yosemite NP -- more than 25 years ago. The bears can have Yosemite.
PS - I still hang the odorous stuff, but higher than I did in Yosemite. I use a bear cannister when required by "rules" of the locale. If not worried about bears, and a cannister isn't required, I've used an Ursack to protect stuff from little critters.
In all cases (hanging, cannisters, or Ursack), I use OpSak bags to eliminate odors.