Received my Stenner a couple weeks ago and finally got everything installed and running today. Had to place it left of the current equipment same as the OP because the space occupied by the Liquidator is too small.
Liquidator disconnected, but still in place. Still need to relocate a water bib that's in front of the Stenner. Happy we went with a travertine pavers so it's fairly easy to make changes.
Had a 3/4" threaded port for installing a sweep pump at a later date if we wanted, so I just used that to plumb in the Stenner feed line after all the equipment. Couldn't find a 1/4" PVC plug for the hole in the plumbing, so I picked up a 1/4" fitting at HD and filled it with clear RTV.
Used a 16gauge appliance extension cord with right angled plug to the timer to allow mounting further from the 110v outlet and allows for the cover to be mostly closed. The cord was soldered to the electronics board so some soldering was required. Used some wire loom to keep UV from affecting the cord. It required a Y shaped screw driver to open the timer housing which was a PITA to find. Luckily the Ace down the street had something I could make work.
I installed a variable speed pump to save electricity when we did our pool remodel. One of the reasons for changing to the Stenner was to allow the heater by-pass to be opened all the way to reduce back pressure in the system caused by the heater. The Liquidator requires some back pressure to make it work, so the by-pass valve was used as a mixer valve to get the best flow possible with the Liquidator still operating at a low pump speed.
After all was done and pool equipment on, the pressure drops to zero with the heater by-pass open at the same pump speed that was previously at about 4 psi. Flow off the spillway is greater now without changing pump speed. Hoping to reduce pump run time with the Stenner since the flow rate is improved. Been running about 11 hrs a day in the summer.