As a psych major myself I will say that when it came down to going through undergrad for it was mainly difficult because it is a lot of definitions and descriptions. On the flip. I had friends in the nursing with all the clinicals, practical's and notes you will need to pass the program before you ever get close to the licensing exam just sounds like a lot of stress. With all of this in mind not to mention you still have to eat , sleep and be a person for these two I would not recommend as a double major unless you essentially live rent free and have entirely too much time on your hands because trust you will always be busy. And in my opinion as nice as a double major can be it is not worth the stress of trying to complete it when you can take your time to do it right the first time around instead of doing both and failing terribly.