You need to write a business plan. I did, before Sept 11th, and it was agreed in principle. I found HSBC very helpful suggesting what and how I should do things. They commented on insurance issues as well, something you should think about as you can't pull over to the kerb at 2500 feet!
Mind you at the moment I am not to sure what to do what with the situation. I might say stuffit and buy my own plane anyway.
Good luck, we all need it. Just think about the poor ordinary folk in Afghanistan, or any where else in the world.
We are lucky in this country.