Hi Tom. I would advise getting hold of the book 'The One Thing' by Garry Keller.
The 'One Thing' that your business needs is more customers. Seems obvious, but not easy to put into practice without getting distrated with other minor business tasks and general living. Fill up to bursting point and more, off load the work to the new employee or franchisee, (after training) then repeat. Dont overcomplicate this process.
Youve found 500, you can find another 500 in the next 6 months if you put your mind to it.