Re: OOC
Sure, here's my thoughts, your psi-powers can derive from this atomic level manipulation. In theory psi-craft could work on this basis any way with our brains accessing this manipulation on a subconsious level. I don't see why you can't function just like a psi person.
I would add some powers that make your STRING/psi-craft special, like manipulating fields of energy, manipulating portals, exorcising creatures, banishment stuff, closing off the open fields around creatures that don't normally exist here.
Pick the powers you want with your psionics. Pick some sense stuff too.