There are two best glide airspeeds for this scenario: lowest descent rate (typically not published) and greatest range. Simplistically, the published airspeed number will get you pretty close to the best lift/drag ratio for make/model. This should be a memory number.

As for the landing, perhaps the best advise I read was from Bob Hoover (aerobatics in a twin Aero Commander): If you’re faced with a forced landing, fly the thing as far into the crash as possible.

The key word: fly. You are not flying if you are stalling. And you only have positive control if you're flying. Or also: don't stop too abruptly.