Since you are a "contractor" instead of an employee, I'm going to ask you some questions. What is the average local income? Is this a large city or small town? What is the single/divorced parent rate in the area? Dual income rate? What are the owners operating costs monthly, including Uncle Sam's local, state, and federal taxes, the insurance, mortgage on building if they own, allocation for business maintenance if they own (building, parking lot, and landscaping), lease amount if they don't, employee costs, benefits if they provide any, etc.
All Star cheer is a luxury and a private activity, the most important question is can your local economy afford to pay what it costs to run the business? Also, your hours are 3 days a week from 4:00-7:00 PM, you have cut out the majority of your single parents, divorced and dual incomes, because most people have a 9-5ish work week. What time do your local schools get out each day? Does that cut out all other after school activities? Dinner is going to be at 3:00 or 8:00 PM based on those hours, 3 days a week. Do you allow your athletes to "bring a friend" every once in awhile to promote your business? Do you do local exhibitions so the public can see your team? In other words, what are YOU doing to increase YOUR business since you own the rights to YOUR team? Your bow, cheer bag, and uniform are very inexpensive. It's great to be kind and thoughtful to your parents and keep costs down, but it is also, disappointing to kids and parents when a business goes under due to poor management or burn out. Allow yourself, and the people you sublease from, a profit. Have you signed a contract? I know I have bombarded you with questions, but these are all questions you need to answer honestly. It is one thing to state the gym is charging too much, but it sounds as though you agreed to sublease at this rate.