Thanks! I chose the 38" stand height aiming for a healthy balance of being able to see the tank both sitting and standing since the tank is 30" tall. In hindsight, I wish I would have went two inches taller or shaved two inches off the sump height (20") because I'm already struggling with the 10" of sump access that I have. Designing the plumbing to accommodate six drain lines has also been a "puzzle" as I try to limit the amount of overhead pipes within the sump area that could consume more of my limited space. Any maintenance in the sump is definitely going to be a back-breaking experience.
I will definitely reach out if I decide I want to add more Orpheks.
Can you run the pipes on the back of the stand? I used floor sliders under the feet and air bags to move the whole setup in once plumbing was done.