i see what your saying.
I have heard that there is a high demand for a flight school at the airport in question. (well - "high demand" for this rural area anyhow)
they are telling me that there is no instructor, nor is there a rental plane and they routinely turn away 3 to 5 people per month who walk into the FBO asking about flight training.
When i instructed there a few years ago it was not uncommon for us to manage 30 - 40 hours per month on our Piper Warrior.
I'm expecting a similar experience, but planning on about half as much business to be conservative.
Once in a while you have to step back and look at the big picture... because it is easy to want so many good things for your business... but then you open the check book and things are different.

If i can secure an airplane (ANY airplane at this point) i have planned on a very miniscule small business loan of about $5,500.
it doesnt sound like much, but it is enough to acquire the office supplies, student desks & chairs, make the class room powerpoint ready and purchase resale items like student pilot kits and books, get phone service etc. without the payment on the loan costing me an arm and a leg.
in short, its enough to open the doors.
all seems within grasp, i just need to get a more sturdy plan together for an airplane, as the office and class room are sitting empty... ready for an occupant.