Try on boots from every brand, good boots that fit correctly won't give you blisters or require breaking in. For me zamberlans we're what worked. I've gone the breaking in route in the past and it never got better
I've always been a bit disappointed with BDC reticles. They can work, but the hold overs change with the magnification setting in SFP scopes and are often at random distances to begin with. More to mess up. I'd go with a simple duplex and sight in the rifle for a maximum point plank range of 6...