This looks spectacular!
Being even more thick headed that usual early on a weekend morning, I"m not sure I understand the problem with the Oanda demo accounts. I have two different Oanda demo accounts running now that I've opened running on the same workstation, and of course they allow no hedging, so one does all of the buying and one does all of the selling. Will this meet your needs for testing?
If I remember correctly, every time I want to open a new demo account with Oanda, I just run the Empty4 setup and choose a different folder (or sometimes I just make a copy of an existing folder), then start it up and tell it I want to open a new demo account for the login.
Let me know if the issue is different or bigger than this. Thanks!
I also have demo accounts with Traders Way and FX Choice that do allow hedging. Not sure if they still do, but at the time I created the demo accounts they were still accepting U.S. citizens, so they allowed setting up a demo.
Steve