I’m considering getting the KH Director but I don’t know if it will be beneficial for me. I’m running the full Triton method on my SPS tank.

I’m in the forces and will be away for a couple of months. The wife will be looking after the tank so I need it to be as easy as possible for her.
Initially I can only afford the director and a doser (I have a Kamoer X4 that I’m using at the moment).
Im thinking I can use pump 4 for 3a/3b to keep the KH stable and the X4 for 1+2.

Would this work and does it warrant the initial cost?