If you don't find your elbows fully extended and locked during the ride when you aren't thinking of them, then you are probably good enough. It looks like you are on the edge of that though. I am too, and am getting a slightly shorter stem.

You got some old style looking bars with a long reach themselves as well as the long stem you added. How does it feel in the drops for you? Both when in the forward part of the drops where you can reach the brakes and the lower part. If you are too stretched out there, then you might try some short reach bars like many with STI's are using today.

Drops something you need to be comfortable in. Though many ride much of their time on the hoods or top bar now, the drops will give you more aero position for longer rides were you need to save energy. Even climbing hills drops might save you just enough energy to look good as you crest the top. Though if you still are grinding out a climb at 10 mph, it probably doesn't matter.