Is there a limit on the number of content sections within Person Profile (Skills and Quals)?

Summary: Is there a limit on the number of content sections that can be displayed on the Person Profile? We have 13 sections exposed at this time AND are using custom context dffs from career preferences.

Content (required): We are working on exposing new content sections within the person profile. We are now using five(5) context DFFs from Career Preferences.

1. Is there a limit in terms of the number of context dffs we can enable?
2. Is there a limit of how many custom context dffs we can display/use on the person profile?
3. Is Career Preferences the only content section that we can use multiple context dffs?