That breakdown of harmony notes has me confused. But if you need “always four notes higher”, you can use one of the parallel harmony algorithms (non-diatonic, with static intervals). In the H910/H949, it’d be Pitch A/B set to 1.335 (Pitch Control on Chromatic). For the Harmodulator, Pitch A/B at +P4. You could also use Crystals, with Pitch A/B dialed to 500c.
Each of the algorithms above will bring its own unique flavor and features to the pitch processing. Or perhaps stick with the Diatonic algo and C Mixolydian? I haven’t thought that last suggestion through, but if you restrict your input to that 5-note scale … At any rate, I’ll help you get there, if it’s possible. I just need to be clear on exactly what you need here, harmony-wise.