You're in a saturated market of one side wanting, the other side offering.
Not that I wish you ill-will, but before you venture into this business, consider the professional and personal liability risk at this "arm's-length" relationship you offer. You will be dealing with a ton of unknowns from those that you will be interacting with - not in person/hands on. The agendas that parents will bring to the table will astound you at the eleventh hour and out of nowhere.
Besides all this, the trend in what your doing doesn't see the light of day beyond 18 months into the venture. I know. Over the last 25 years I've been asked over and over again - "how do I do this coach and make a buck out of it." Add to all that, this web site does what you're doing - basically, and has for years. Not that it's perfect, but it's free and matches the on-again/off-again attention spans of a high percentage of those that visit.
Making a buck in the coaching realms of this sport is a thankless and long drawn out process. Doing that as a money making venture is one of the toughest things you can do. Did I mention thankless.