basically, no
the lower you go the shorter the pistons in the shocks, the shorter the travel, the stiffer the damping
unless you get ~£500 range of coilies that have adjustable damping
you might be able to run 40mm lower and retain some comfort but its really not low enough

cheap coilies will always be really harsh, decent 60mm shocks and springs it's not crashy but still a firm ride needing bump avoidance skills when driving
