Is it safe to be honest about how I plan on doing business or should I keep some of it to myself?

I have a few niches and ideas I want to concentrate on and I want to be able to trust them without worrying about giving everything away.

You need to get enough info from the broker to decide if your ideas will mesh with the image they have worked to build and the way they expect agents in their office to conduct business.

You need to give enough info to the broker to make sure it will be covered by their E&O (or they don't object to you carrrying your own and covering them), that they won't get heartburn over what you want to do (the image/way of business thing again), and they can support/accept your plans.

I agree with the above poster. If you are just meeting with them to interview, then I wouldn't feel the need to divulge too much info.