Odio has 1 in/out pair, each. That would serve the phone to work either as a sound source or fx processor or a recorder. Pick one.
Where is the USB from the Odio going? Where does the MPC come in? How do you work with the MIDI clock coming from the MPC? How do you actually use the modulation from the MPC in your rack? Where is it all being mixed/coming together, where recorded?
You have multiple sound sources but without the necessary utilities and plumbing it's going to be a disparate collection of gear rather than a workable instrument, as it appears to me.