FBB is not a popular category at all -- the only place you really see it anymore is NPC. My comments re: Physique were specific to NPC. I love the look they have in the European shows - long, lean, conditioned... I even prefer their posing to ours, but its just damn tough to do that in heels. I would tell you to attend some shows in the federation you are interested in and talk to people, or better the judges or promoters for their opinions. At the local / regional level it can be so different, region to region, what they are looking for - so the more you know about the preference in the area you would be competing, the more you can at least get an idea of expectations. In the meantime, continue to check the photos from various shows even in different federations, but still paying attention to the regional judging preferences to make a better guestimate. Some federations or promoters have their own websites where they post contest results / photos, and also RxMuscle's gallery & Musculardevelopment are the two best places for NPC & IFBB coverage.
And my best recommendation when you do set up a target show, where possible, try to line up a couple shows back to back so you can get a wider range of experience and feedback. It can really be a crapshoot sometimes and all you can do is bring your best to the stage and see what people think.