A couple suggestions: Make sure you can run both Autocad & Pro-E (assuming Pro-E is what everyone is still using 4 years from now)

I can run Autocad pretty well, but I can't run Pro-E. When it started being used a lot none of my employers would send me to training for it because I was a high enough level engineer that they all said "you have draftsmen to do that you don't need to know how", now probably 3/4 of the jobs I would otherwise be qualified for I cant get because I don't know Pro-E.

Take at least 1 HVAC/ refrigeration class & another in fluids/hydraulics/piping or whatever they are now calling the course that teaches you about pumping different viscosity fluids thru pipes. If you can do both of those things you can always get a plant maintenance engineering job, or a job with a consultant.