I think this is something I would try ordinarily, however we will be integrating the Triton ICP results back into the Apex Fusion interface so I would like to use a partner's product so I can ultimately have the same experience as our customers.Would the @Aquaforest system be better for you then? They have the recipe available for mixing their main dosing system from the powdered components that you can buy separately, complete with instruction videos. That should make it much much easier to lower just the macro elements and keep the trace levels you need.
There seem to be plenty of large and impressive tanks running their system in Europe (based on their YouTube channel) and they seem more interested in experimenting with hybrid solutions. That can be a good thing or a bad thing, but for an "advanced user" like you it might be a better bet.
Tony