Sounds like you're in great shape! Does this include university psychiatry departments? Also, if you don't mind me asking - does your research/dissertation area play the bigger role in securing a great job like this one, or can it be based more on program performance? (I'm trying to figure out how far ahead one needs to plan...)
Roughly, the best paying positions for clinical psychologists are:
1. military/DoD and correctional facilities (at least in the early years, then the benefit kinda plateaus)
2. medical centers, including: VAs/specialty medical centers (cancer center)/university hospitals (depts of psychiatry, neurology, oncology, bariatrics and transplant, etc).
3. private practice/specialty evaluations (forensics, neuropsychology, child development)
4.academia (depts. of psychology, public health, education)
6. private practice (general, therapy-focused)
6. community mental health centers
Also, within this, certain clinical psychologists tend to be paid slightly more, like neuropsychologists.
That is just a rough breakdown and I am sure others probably have some different experiences. I'd say it is never too early to plan for where you want to end up. If you have an interest in positions listed at #2, then you really want to look for grad schools that offer practica and nearby externships in hospital settings. Make sure to develop balanced training with solid intervention hours (evidence-supported treatments in particular), solid assessment experience (IQ, personality, cognitive), and research productivity. The general trend across medical sites is a push toward empirical practices, so neglecting research can be a big problem. As for the dissertation in particular, it probably helps to have studied an area that is in line with your career goals, but for medical center careers, I think your progress with it is most important. Just get it done in a timely manner. It will open doors to medical center jobs because you will be so much more competitive for those internships if you are proposed/nearly defended when you apply and for post-doc if you are defended by the time you apply.
Not sure if I answered your question, but these are my general thoughts.