You have to read Boveda's website as it's based on the number of cigars you have. I recommend 65rh bags and I use a lot of them in each of my coolers. They'll work easier and last longer that way.
https://www.amazon.com/Boveda-2-Way-Humidity-Control-Humidification/dp/B00CPPG228
https://foxcigar.com/shop/accessories/boveda/boveda-65-humidity-pack-60-gram/
https://www.amazon.com/Boveda-65-Percent-Humidifier-Dehumidifier-12-Pack/dp/B00CPPG228
They're not expensive and adding a couple extras, they'll last for years.
ok
1) keep your good cubans away from your field bought ones, possible the field bought ones might have beetles, so a good idea to keep them separate.
2) Magic number rh wise for cubans is 63-65%, personally I store at 65, 69/70 is outdated and too high
3) You really want the 60g 65rh boveda's, these specifically https://www.amazon.co.uk/Boveda-2-Way-Humidity-Control-12-pack/dp/B00CPPG228/ref=sr_1_8?dchild=1&keywords=65rh+boveda&qid=1587575801&sr=8-8
You can usually buy these as singles or 3 packs, but I can't see any on amazon right now
4) For storage, the best honestly are good airtight tupperware containers, I use lock n lock, they come in various sizes, you may need to check the measurements to make sure they fit, but something like this would be good
Exactly. I have ten or so in each of my 72qt. containers and they've been lasting for years. OP, buy this and add to your container and you''ll be good.
https://www.amazon.com/Boveda-2-Way-Humidity-Control-Humidification/dp/B00CPPG228
OP asked WHERE? … there are many places to buy Boveda packs: the local head shop, the local B&M cigar shop, most online cigar retailers, my usual go-to: Amazon
Based on my current consumption that pack would probably last me 5+ years.
amazon seem to be selling 12 packs at the moment
We could go 50/50 if you want? I need some new packs as well.