In answer to your second question of where do you commence an approach from, going with my theory of getting out of it alive.
Again... same principle. You can be creative. You are an emergency airplane and you will do what's needed.
You can descend to the grid MORA and then use a racetrack pattern over the OM if one is prescribed.
You can descend to MSA and then use a long final in order to have a chance to get down to profile altitudes.
You can decent to MVA altitude should you happen to know it and join the approach.
You can go to an airport that is VFR and land visually and say screw it. [if you happen to see where the cloud deck ends from where you are at]