Replacing 4x6 stoop with 8x18 concrete porch. What roof style is the best option for my 25x40'rancher? The existing roof line has a 24" overhang. If we build a reverse gable would the new roof need the same overhang and if yes then should the porch floor stop short of the new overhang? Would a shed roof be in order? Just want the project to look like it belongs.