Company-Tailored Jepp Enroute charts
I don't regularly fly out that way anymore. I do not recall if there are areas that would prevent you from getting to a safe (physiological) altitude inside the 12 minutes.
We have some Jepp enroute charts with our company name at the top of the page. This tells us that these specific charts have company-purchased info on the charts. This includes brown-bordered areas (they look similar to MOA's and Restricted areas). These areas have specific names, like "CUL 1" and "CUL 2." If you will be flying above that area, simply reference the "Sector Driftdown Alternates" table on one of the side panels on the chart. In the table there is one or more alternate driftdown airports listed.
In some locations there are "Cross-hatched sectors." These are isolated areas of critical terrain which you should not enter if doing a driftdown.
The company pays extra for this service. We do not carry WAC or Sectionals. You probably have Jeppesen's "Q-service." We do not.