How difficult would this be? I'm planning on taking all of the related classes for my upper-division electives (Nuclear Physics, Particle Physics, etc) but I want to make sure that this is possible before I completely commit to it. Also, for those who are in / done with grad school: is it possible to do that subject for grad school part time? My family really needs income as soon as possible, even if it means taking longer to get my masters. Thoughts? Thanks for your time.