Hi Adrian.
Yes the CBR throttle bodies do indeed have a wax-stat auto choke.
I have no idea how it would function in conjunction with the MS ECU though.
I have stripped the chokes from one set of bodies & think it will be easy to adapt them for the air intake pipes from the IAC unit.
I suppose they could also be blanked off & the extra intake pipes placed into the inlet manifold stubs.
I'll try & get a couple of pictures up of the IAC units I have found.
It would be a good idea to try to post a sketch or two to show how I intend to set up the IAC system.