Indoor cats do not need the FeLV vaccine. It is at best 80% effective, and has been implicated in vaccine-induced sarcomas. It's probably a good idea though for indoor/outdoor cats. The FIV vaccine is one you do NOT want to consider. It's effectiveness has been debated, and the consensus is that it's not terribly effective. But worse still, the tests that shelters use to determine if a cat is positive for FIV cannot distinguish between a cat that has received the vaccine, and one that is actually positive for the disease. This means a death sentence if your cat ever gets outside and ends up taken to a shelter, as most shelters routinely euthanize any cat that comes in and tests positive for either FeLV or FIV. FIV is a lifestyle disease, and is only spread though bite wounds - unneutered males are the cats most likely to get it as they fight each other over territory.
Many years of cat rescue