My girls have all been spayed. Rosie and Madam Dupree a couple of weeks ago and Delilah and Bear today. My girls are all about 6 months old and I believe Bear is the smallest at 200 grams and Madam is the curviest at 400 grams. They all made it, obviously. I was very worried like you, as they all just recently sort of recovered from a URI. When I got my girls, they looked out of it and sort of sedated. But as soon as I brought them into the house, they stood up and were sniffing like crazy. They all looked kind of wet too. Don't know why. So long as your vet has experience, should be fine. Is the teeth clipping necessary? Whta has your vet advised?