Assuming it is legitimate, it is sort of problematic:
1.) As a human being, we want this company to survive. First reaction is to help them out.
2.) As a sensible person, only a fool would order a car, put half down, then hear "we're having financial troubles at the factory, can you pay for it all now?".
3.) As a pragmatist, you're damned if you do and damned if you don't. They stand a chance of spending your money on things unrelated to your services to be rendered right now, fulfilling you with a lesser hunt later as they might "double sell" the highest quality animals, throttle back on maintenance, etc. (I'm speaking in general, not saying this is what a particular individual would do)
If it were me, to manage my risks, I would assume that 50% of my money is gone for good and that you're not getting your hunt next year. Sunk cost, goodbye. I would then couple that with my humanity and say to myself, how can I mitigate my losses here? The answer would be: Get on a plane soon, demand a discount, and hunt RIGHT AWAY. If they need the money, they will take you early. They should give you a present-value discount because money to save their business now is better than losing their business.
You would lose the convenience of your confirmed dates, altering your life to hunt as soon as possible. They would lose profit margin in exchange for an infusion of immediate capital.