Like I said, the Old Order is a blank slate.
Forgotten Realms Campaign Setting wrote:
Monks of the Old Order do not worship any deity, but are devoted to the philosophy espoused by a deity who is either now dead or has never existed on the material plane of Toril. The monks contradict themselves on this point, but the deity's identity isn't important to them, it's the message they care about. The Old Order never has huge monasteries, but has spread widely through Faerun.
The point being is that no message is suggested to the player. You are free to make up your own. If that is some sort of Ki thing, thats your call. You can be from wherever you want, too.
I suppose the only issue is, if there is some other Old Order player who has brought a different message. Nature of multiplayer, really. But that could always be explained as being from a different monastary, and could result in some nice yin/yang rivalry, perhaps!
...But youre alright, I think. Theres not much that would force a character like this to be scrapped.