The downside of plugins is that it has both systems (more things that can go wrong, added cost, weight) and they're not amazing at being an ICE car (small fuel tank) or electric car (small battery).
In your case it seems that a pure EV would be fine? Maybe not one with a small battery, but 300-400 miles of range isn't that uncommon these days.
In any case, the important thing is that it works well for you.