In the spirit of transparency I'll admit that these three didn't get washed, just trimmed and cut from the branches into the bags. When I grow a plant that gets a foliar spray I always wash. If the plant got an inordinate amount of dust, I'll wash. If there's mold or pest I'll wash.
But these plants had pampered and protected lives with good air circulation, so I'm comfortable not washing them.
When I do wash I use a dilution of hydrogen peroxide, 3% - one 32 oz bottle to every 5 gallons of water - in the first bucket and follow with at least one rinse, if not two. Those rinses are clear water. All buckets are room temp water, so they can be set up the night before. I no longer use lemon juice or baking soda. I'm happier with a cleaner wash.
I hang upside down because you want the water to drip off the plants. The branches are cut to a length that'll fit the buckets without bouncing off the bottom or sides. For low and slo drying the buds are trimmed from the branches into the bags after 4 hours. That drying technique gives you the purest tasting product, IMO.
When I hang to dry I prefer to not wash the plant, but rather cut at the surface and hang upside down, removing only already dead or seriously necrotic leaves. In this way the fans embrace the buds and slow down the water loss, as well as protect the terpenes, to some extent.
I usually hang for 4 days to a week, depending on what the humidity is in my apartment. I store with Boveda packs, and I've learned what that 62-68% feels like. I trim when I jar.
Cobbing is done anywhere from harvest to two days later, using plants that're hanging, or buds dried a week low and slo.
Everybody finds their own techniques and processes Joe. It'll be interesting to look back at how you evolved after a few years.
Our plan is to ramp up her CBD consumption with whole-plant extractions as well as get a juicing garden started. My feeling is any canna juice I can get into her is a bonus. Make it high in CBDa and I’m even happier. 
