I can make suggestions but it really comes down to money...Thank you too, this is very helpful!
I had been to their web site last year and also read questions on Amazon about it, and still couldn't come up with this list you just made. Ah, so with the base plan you use the app and not the web site to access (& no rent to pay for cloud storage)?
I will have to decide on whether powerless with batteries (likely) or not, as I think I can get power out there for both the summer and winter locations, but I'm sure I can't run ethernet or hard-wire LAN stuff out there like @Ponypoor does, it will need to be wireless. I just found out from DH that the thing we have for getting our cell-based wifi is a "coffee can" situation and it does have LAN sockets on the side which we are not using, so I could plug a base station into it. The limitation might be distance from the coop to the base station.
Technology is great but not magic, and when you live in the country or in a situation were you're not close to power, high speed internet, etc that is when one realizes just how much limitation there is to technology!
Bain of my existence are those (not naming my sister...) who tell me to just log onto Netflix and stream my fav shows

Ok whining tax for technology:
A very young Pangoo before he became a Rooster-Brat