Putting the orders in wouldn't be the problem, it's hoping that he put them in where he wanted them and tracks them properly that will be ;)
I pretty much agree with you, although I have a low post count, I've been lurking for a few years and I can tell from the thread titles who the OP is...
Good luck, god speed.
Regardless of the whole premise and more to the point of your question, with that type of activity you need to rely on very well tested code. I would really discourage using the common retail trading platforms like NT/MC, they are not made for what you are trying to do...