I'd love some help from the experts on my new RJ60+ install...
Wiring: Below is a photo of my electrical setup at the pad. My SuperFlo VS pump is wired to a 120v plug (on the left) and stays on 24/7, mostly at low speed. My Stenner chlorine pump (going away) and my pool lights are plugged into an outdoor wifi receptacle and controlled via phone app scheduling. I have read that I can also wire the new RJ60 for a 120v plug-in. My question is whether it is prudent to somehow slave the RJ60 power to the pump so in case the pump somehow loses power then the RJ60 will also turn off? Is that easy to do when I'm not using an external pump controller/timer?

Below is a photo of my plumbing. I'm thinking of modifying the return line to resemble the orange line I've drawn in. This gives me 16"-18" on each leg before and after the 90 degree bend so I can install the flow switch on the first leg and the swg cell on the second. Unfortunately there's not enough room on the existing configuration to install the switch and cell side by side where I currently have the Stenner port. Thoughts on this approach?

Lastly, the manual for the RJ60 indicates an ideal salt level for operation of 3500ppm and to keep salinity between 3000-4000ppm. I've read in other posts that I should target 200-400 above the manufacturer recommendation to allow for some salt loss. That math indicates an initial target of 3700-3900ppm? This sounds a little high so I'm double checking.
Thanks in advance!
Neil
Wiring: Below is a photo of my electrical setup at the pad. My SuperFlo VS pump is wired to a 120v plug (on the left) and stays on 24/7, mostly at low speed. My Stenner chlorine pump (going away) and my pool lights are plugged into an outdoor wifi receptacle and controlled via phone app scheduling. I have read that I can also wire the new RJ60 for a 120v plug-in. My question is whether it is prudent to somehow slave the RJ60 power to the pump so in case the pump somehow loses power then the RJ60 will also turn off? Is that easy to do when I'm not using an external pump controller/timer?

Below is a photo of my plumbing. I'm thinking of modifying the return line to resemble the orange line I've drawn in. This gives me 16"-18" on each leg before and after the 90 degree bend so I can install the flow switch on the first leg and the swg cell on the second. Unfortunately there's not enough room on the existing configuration to install the switch and cell side by side where I currently have the Stenner port. Thoughts on this approach?

Lastly, the manual for the RJ60 indicates an ideal salt level for operation of 3500ppm and to keep salinity between 3000-4000ppm. I've read in other posts that I should target 200-400 above the manufacturer recommendation to allow for some salt loss. That math indicates an initial target of 3700-3900ppm? This sounds a little high so I'm double checking.
Thanks in advance!
Neil