Welcome to CG Cookie!
I had lots of problems with hand eye coordination while drawing with an Intuos and so I saved for a screen monitor. I bought an Ugee 1950B, which is cheaper (~400$) and bigger than the Cintiq you are aiming for – Cintiq 16 I assume? I bought it 2 years ago and still am more than satisfied. No dead pixels so far, perfect pressure sensitivity. I only have issues after Windows updates, but I heard there are some problems after the update with Cintiqs as well.
Buying a display tablet made my workflow faster and easier and also less frustrating which led me to painting more.
I would recommend buying a display tablet if you think your main problem is hand eye coordination. You really don´t need to aim for a Cintiq though. One of my friends bought one just a short time before I bought the Ugee tablet and she has dead pixels already.
I hope this helps 🙂