H that does sound like overkill with the layering...i would wear SS jersey over a mesh baselayer and a wind jacket/gilet with nano flex arm warmers...in 5-6hrs of constant rain its probably easier to simply let your shoes get wet as they will eventually anyway. no need for overshoes...as DJ says take a pair of sealskinz to swap into
H that does sound like overkill with the layering...i would wear SS jersey over a mesh baselayer and a wind jacket/gilet with nano flex arm warmers...in 5-6hrs of constant rain its probably easier to simply let your shoes get wet as they will eventually anyway. no need for overshoes...as DJ says take a pair of sealskinz to swap into