I've heard about a lot of issues with Nova and the number of clinic chairs they have. I don't know if that has changed in the last few years, but from what I read it can be a huge pain getting chairs for appointments. Also, if you think UMDNJ would make you a more competent clinician, I'd definitely stay there. It's hard to evaluate the clinical experience at 2 different schools, but UMDNJ seems to be pretty good.
Also, a lot of schools won't let you just transfer straight into clinic. I contemplated transferring, and some schools I looked at wouldn't let you just transfer into their clinic at 3rd year, you'd have to repeat 2nd year. I'd call Nova to see what their policy on it is, may or may not be worth it.