My CTC-11 in the metal cabinet had its original legs and they were longer than that, as I recall. I suspect the Admiral's legs were similar. I eventually sold the TV, so I can't be more exact than that.
When I got the set, the legs were not attached -- just rolling around inside the cabinet. One of them had split around the screw and I was never motivated to fix it. I know it was a style of the times, but to my eye those massive cabinets look awkward standing on spindly legs. When the legs are made of wood you are just asking for trouble every time you move the set. Even with longer legs, the screen ends up pretty low to the ground. So I guess that is three reasons why I never felt like trying the legs
Phil Nelson
Phil's Old Radios
http://antiqueradio.org/index.html