Should I advertise within the school community?

My son’s high school has offered parents a free opportunity to advertise their business in their yearly parents and friends services directory.

My thoughts are:
– This is a brilliant way to market my coaching services to parents/adults of various backgrounds, careers and ages.
– I am in the process of starting my life coaching and am not qualified enough to advertise.

Second level thoughts are:
– Should I advertise as a general life coach for the experience to be gained?
– Is now the time to test a niche and see what outcome arises?

My separate feelings are tightness in the chest or excitement bubbling in the chest.

I would appreciate some assistance in working through these thoughts. Thank you.