If there was no limitation what kind of system would you like to build?
I am going to assume that you would like to tackle 3 things
1) Grow food with the humanure that you collect from your "septic tank"
2) Do away with a septic tank and have a all in one composting system
3) Removing your grey
water from the septic tank and drain field, instead watering growing plants.
Iterations are fine, we don't have to be perfect
My 2nd Location:Florida HardinessZone:10 AHS:10 GDD:8500 Rainfall:2in/mth winter, 8in/mth summer, Soil:Sand pH8 Flat