If you want to talk once a month, find a coach that can meet that requirement. This seems pretty self-explanatory, but it's an important question. Most likely you'll feel comfortable telling your coach anything, but make sure you don't' have gender issues before you start. Go into coaching knowing exactly how long you're going to stay in the relationship. Nothing's written in stone, you can always add more time or decide to stop.
Most coaches require a three-month commitment to coaching.
They do this for a reason. When you start coaching, you're going to make goals and objectives for yourself. The first few months of coaching can be very energizing and very tiring. You may not make the type of movement you thought you would, you may achieve all your objectives in the first month. The point is, it takes time to figure out where you're going and how you're going to get there.