You may be overthinking this a little-you are right that it is very important to know what you want to work on, but every time I have set goals with a therapist they only have (allow) 3 things. Other things can get added in as they come up, but for now all you have to do is identify the top few items. When you get those mastered you can work on other things, but I think you will find that working on 3 specific things sometimes helps with other behaviors.

Another thing that you might want to consider is that the psychiatrist will probably be mostly thinking about what meds will help you. They will probably have a good idea about what works for OCPD as well as for any other issues you may have. Most pdocs don't do much therapy and once you get your meds figured out you will probably see your pdoc every 3 or 6 months. So it might be a good idea to seek out a therapist who specializes in CBT. Your pdoc may have some suggestions about who to see. I just don't want you getting all psyched up to talk about treatment goals and behaviors when the pdoc will probably be mostly interested in symptoms.