Congratulations on the Occies! I just got 4 of them myself. They are the neatest thing in my population so far. I will put my headphones on, and crawl into bed (30 gallon tank is on my dresser next to my bed) listen to my music and just watch these guys. I have had them about a month now.
The four of them were in a 10 gallon. And they were fine for a while...then I noticed one of the females was getting pushed out. So, into my 30 they are. I agree. julidochromis will do well with the occies, or at least from what I have heard.
The most important thing is not to get another shell dweller species, otherwise wars will happen. You are better going with rock/cave spawners for tank mates. Good Luck!