I know exactly how you feel. my fear was the anesthesia and I drove my vet NUTS for the week before with my questions. BUT you willl need to have him put under to get those baby teeth out anyway so my feeling is if you have no reason to keep him intact to go ahead and do it.
8 months is not that old he may not have started marking yet and he may never mark in the house depending on how solid his potty training is. My gsd is intact and he would never dream of marking in a house but most intact males are not that good
