Sanitation: One of the most important preparedness discussions.

[Great-Kazoo]

You only need 1 set of good utensils. I don't see bleach in an equation for cleaning till it's real serious. Do you have a way to measure the bleach/water ratio to avoid 1- not strong enough 2- too strong to point of toxic? If you want to use a multi tiered system. Use the bleach / final rinse as the next wash cycles pre-soak.
Get your stuff like you're going camping, on foot. How much do you/ can you, take with you.

As i mentioned , hunkered down, i'd use an area on the apt building roof for waste. keeping smell and other things associated with it above you, AWAY from water system.
If you have to go outside you should have an extra pair of eyes. You never know who has seen you and casing the place. That dump that can't wait, could be your last.

Regarding a bottomless LL. Once you do that, you've lost a way to carry all your toiletries, and 6+ rolls of TP.

One thing to keep in mind. Not every scenario will or could work across the board. Urban survival will be different than suburban, less populated areas.