Upload & Sell: Off
I guess the question in my mind is what causes you to miss shots?
For me, as an amateur/enthusiast who mainly shoots landscapes, travel and candids, handling held me back far more often than the sensor did. I am so much faster with my D300s than I was with my D90 (which has handling very similar to the D7000).
Everyone is different, so maybe switching between two handling schemes won't be an issue, or the D7K is fine for you (it certainly doesn't hold Tim/Trenchmonkey back at all).
The D300s has been a revelation for me. If they make a D400, maybe I'll switch, but the sensor hasn't been a problem.