Thats something your vet would have to decide. We usually have him out to the farm for vaccinations and then we take the horses in to his office for the teeth floating. He does all my dogs at the same time (I have 6) so thats why we have him here for the vaccinations. I don't see anything wrong with having it all done on the same day. But again that would be up to your vet. I see your point about the sedative mixed with the vacc. could cause some sort of reaction.
"Until one has loved an animal, part of one's soul remains unawakened..."
- Anatole France