So what sort of system did you end up going with, Brettski?
Conventional, with a capital "C". No muss, no fuss. The main leaves the house and dumps directly into the 1500 gallon tank. Solids sink/settle and the liquid effluent runs out of a pipe near the top of the tank. That pipe runs to a concrete distribution box.
One of those pipes is the pipe coming from the tank. The other 4 pipes are outbound from the distribution box and run for 100 feet long. They are perforated and set in a 3' wide trench that is filled with about 12" - 18" of rock. The filter fabric is placed on top of the gravel bed and the soil is dropped back into the trench to fill it back up.
