Probe, dosing lines and heater sump placement

[RagnarReef]

Is there somewhere someone experienced can point me to for best practice in terms of probe, heater, and dosing line sump placement? For reference setting up a Cade 900PR.

 

[don_chuwish]

Heaters in the largest chamber because that's likely where there will be enough room.
Dosing after the skimmer, but somewhere with high turbulent flow - like where the water passes over a partition.
Temp probes 'before' the heaters in terms of flow, as much as possible. Mine are in the same chamber with the heaters and skimmer, but on the other side from the heaters, with the skimmer in between.