I get that you're not on-line for long. But, when you are on-line, what sort of bandwidth do you need? A few years ago, I looked into working from the family cottage on a quasi-permanent basis, but there was nothing really available that met my needs.
Satellite tends to be okay on the download, but, even if you can do upload via satellite (when I was looking, upload was by land line - ick), it's really slow.
If you can get cellular data with tethering, that's not too bad, but you'd want to check on reliability and the actual limits imposed by the provider.
WiFi might do, but possible issues include reliability (what happens when it goes down), access (how many people share the connection, and does the provider really want to have you working through the connection), and security (shared WiFi?).
There are some rural providers that provide wireless connections to individual customers (the antennae look like small microwave antennae). That may be a possibility for you, but I"ve no idea on the cost.
I'd love to be able to work that remotely. Totally not possible with my current job. Sigh