Is the stereo bus i mix all tracks down to....the stereo channels referred to in decoding Mid-Side data?
No. Conventional stereo is left-right. Your source channels will be panned left-right into a stereo mix bus with left and right busses. The output fromthe mix bus is left and right.
If you want to work in the mid-side format you have to start with a mid-side mic array, or convert a left-right stereo signal into a mid-side stereo signal first. There are plug-ins that will do this for you (as well as converting back from mid-side to left-right, or you can achieve it with manual signal routing and polarity inversions around a virtual digital desk.
I intend to copy the side mic to another track and pair those two tracks and phase reverse the right track then pan left/right accordingly......on mixdown these will go to main stereo bus. The Mid mic track will stay in mono...be sent to the stereo bus on mixdown with centre panning.
That is one acceptable way to decode a mid-side source back to left-right stereo.
am i good to go?
You would be if you had a mid-side source to be decoding...but from your description I'm not entirely sure you have...
Technical Editor, Sound On Sound