The bungalow will alsmost fill all the space in the 1/8th hence look disproportionate. A maisonette would be better.
A 5 bd house is on average 200m2 in plinth area.
A 1/8th is on average 450m2 in plinth area.
A bungalow ill have a foot print of almost 50% of the plot hence look unproportional.
A maisonette will have a plint of 100m2 , nearly 1/4 of plot size, hence leave ample space for septic tank, parking, garden etc.
As Iron Sharpens Iron, So one Man Sharpens Another.