yeah you will need at least a compost bin outside, so countryside is preferable.

i can see getting quite happy when people use your 'recycling system' cause it simply means more fertilizer and soil two years down the line, so yeah. though large parts of asia have utilized what is known as "night soil" - the fresh, uncomposted human refuse. that can be quite problematic from a health standpoint, though not always.

not to mix would be in order to avoid containing the ground water accidentally. in humanure compost the urine is sort of essential, which the series will get into.

oh you will feel quite converted by the end of this ahahahha. blessings