I have a question about this routing. In that config you'd be using the PS 200's built-in cab modeling, right? You'd only be getting one signal from the Axe and if it's going to real cabs via external poweramp, then it shouldn't have a cab block routed into the chain. I don't know how great that cab modeling is going to be, especially compared to the options you'd have with the Axe's IR processing.
If it were me, I'd split the signal in the Axe's grid to Output1 and Output 3. I'd put a cab block at the very end of the signal path just before it hit the Output 1 block, and split the signal before the cab block and route the split signal into another Output. Probably Output 3 because Output 2 only has XLR outs. Ignore the XLR out on the Powerstage 200.
That way you can route the signal to the Powerstage + cabs (without IRs applied), and also to Front of House (with IRs applied), with the Axe-Fx doing all the IR processing.