Journals and blogs discussion

I picked up my CB6000s today and mounted them, but I’m currently stuck on choosing the right ring and spacer combination. My options are limited since two of the rings don’t fit well—one is too large—and another isn’t feasible for me to wear at all. The third and fourth sizes work; if I go with the third ring, it pairs with the smallest spacer, but switching to the fourth requires a longer one. At this moment, I plan to stick with the third ring. Should I switch or stay put? Also, any advice for someone just starting out?