I'm going to have to convert that to metric but sounds like a good optionI use AL80s for bailout and I also use it for offboard Diluent.
My personal rotation is simple and works for me.
I have them filled with 18/45. When I get down to 2800 psi, I top it to 3100 with Helium and dive 16/50.
When it gets to 2800, I top it to 3100 with 32% and dive 18/45.
When it gets to 2800, I top it to 3100 with Helium and dive 16/50.
This pattern continues indefinitely. Both of those gases are adequate for my normal dives and it is a simple rotation.