Did you ever get your answers?
I did exactly what you want to do,, in the year 2000.
I simply mounted both torches side by side with an exact dimension of offset.
I used a manual rack to raise or lower one of the torches, depending on which torch was being used.
It is virtually a MUST that the oxy fuel torch be a 3-hose. A 2-hose requires manual operation of a valve on the torch,
That is not good,, I do not want to get off my chair while I am running parts,, the control can turn my torch on.
Well,, enough for now, let us know what you are doing with your machine!!