It's really nice, very legible. In fact, some of the more idiosyncratic features might not even be needed - I think it might be even better without the idiosyncratic broken O and semi-serifs. I love the small sizes!

I'd say decide on a target use (and especially size) for this. The heaviness of it offers the legibility at smaller sizes that Birdseeding mentioned, but there those "ideosyncratic features" are lost (if not counterproductive). On the other hand if you are aiming at a larger display font, you may want to reduce the heaviness.