Looking great in here Blaze. I like 10 gallons per plant. 7 is just fine too but I think 10 doesn't cost me much more and gives me a little extra time between waterings and just generally makes things easier.
I like to trim dry because of the terps. And I find it easier. Plus I can cure the buds at the same time while I work through the stack lmao.
I have been drying to stem snap point and then cutting the branches into easy 8" pieces then putting them in some 6.5gallon buckets with gamma seal lids. The gamma seal lids are about 8 bucks and fit over a 3,5,or 6.5gallon bucket. They seal water tight. And air tight. Survivalists use them for food and supply storage, even burying them in the ground for the long term.
For untrimmed I can fit about 10oz in a bucket. All trimmed up you could fit several lbs easy. I use turkey bags to keep the strains separate and to keep the insides clean! You could leave these untrimmed branches for weeks (or even months).
i use mine in soil, clay and coco 
i also think both canna and especially AN are way overpriced for what they are, as long as you are mixing right, checking strength and checking PH, any nutrient line will work great 
btw, AN's PH perfect is a load of crap if you mix it up to a strength that wont kill your plant, one recommendation is to mix at half strength and always check the PH 
