We still have to consider how much altitude might be lost in pitching the aircraft down.
It hasn't been tested and therefore, in the absence of reliable data, it's really anybody's guess. In the TAROM A-310 incident at Orly the airplane pitched down at (more than) 5°/s, so perhaps 1100 ft (30° in 6 seconds at 11000 fpm) might be a reasonable guess?