This is absolutely doable, I've been off-grid for almost 3 years now with a very minimal setup and for the most part I have no complaints outside of a couple weeks in the dead of winter, and the one week that gets really really hot in the summer. I'm not sure how to calculate my total embodied energy but in terms of electricity I have never used more than 7kWh in a single day, which works out 300W and includes all of my computing needs as well as refrigeration, lighting, minor heating/cooling, some small amount of cooking and at least a couple lattes every day.
On the worst day in winter my consumption is usually ~1kWh, limited by solar production.
On the worst day in winter my consumption is usually ~1kWh, limited by solar production.