Since I work from home, I could conceivably work for about two weeks before running into that 8GB limit, should I be forced to use the hotspot wi-fi. (I'd want a dedicated hotspot for that, to free up my phone, but that's neither here nor there.)

The only hitch is that they don't offer month-to-month plans; the shortest period you can sign up for is three months at a time, and the rates go up after the first three months - presumably to "help" you to decide to pay for the year-in-advance plan.