Do you think this would keep well? That is, if I make a full recipe, do you think it would keep well enough in the fridge for one person to eat ov...

Yes, absolutely! Eat it room temp (or warm, just not hot or cold). I'd supplement with cooked grains and/or protein of some sort, and it would stretch more than a couple meals. I think some farro and leftover salmon would make it an especially great lunch, for example.