Dear ATGproperty, I think you missed to point out what languages, frameworks and API are to be utilized. I personally code in more than a dozen languages (and counting!). I have some 15 years of experience in all aspects of programming, from web development to engineering applications. Something important: I am a stock and futures trader, so I know the matter and this is important, you dont want to explain financial intricacies to the choosen freelancer.
Seriously, it seems to me hard work, you need a professional to get it done, so you need me. My rates are higher, but I guarantee results. I hope we can work togheter, after all it seems to me even an interesting project :)