I didn't like my med-surg clinical rotations and had been a nursing assistant on a medical unit and didn't like it, BUT when I graduated I took a med-surg job just to get the experience. I wanted to actually use what I was tested on in my skills labs (IV, tube feeds, foleys, chest tubes, etc.) I was there almost 3 years. I'm very, very glad I worked in med surg and wouldn't change it.
I now work on an inpatient adult psych unit and I like my patients a lot. I've been there for almost 1 year but don't see myself staying nearly as long as the last job due to things like scheduling, a few co-workers who aren't so nice and it's become monotonous in some aspects which makes sense as it's over 90% easier than med-surg nursing. It's been a very good experience overall and will only be a benefit as I go forward in my career.
Do med-surg for 1 year then go on to psych. There are important things that you learn in med-surg because you just have to, that are at times necessary in psych. I can't tell you how many times I've known both important and random things that the psych-only nurses did not.
One of my best friends from nursing school
has wanted to be a Psych Nurse Practitioner for years and even she did one year in med-surg for the experience and to make herself more marketable. She now works at another inpatient psych hospital.