Here is a link to Marc Chauvin's Website and his Presi traverse escape routes; the only thing that I would do differently is label the escape route bearings based on magnetic north (vs. true north) with a piece of tape on the back of one's compass.
http://chauvinguides.com/PresiTraverse/presiescapeguide.htm
http://chauvinguides.com/PresiTraverse/presiescapeguide.htm