It is great that you found a good Vet. I certainly know from personal experience that locating a knowledgeable herp vet can be very difficult.
Not to hijack this thread or anything, but I am actually a first year Vet Student right now, and I would like to have some focus on reptiles and small exotics. I am fairly certain all Vet School curricula are generallt diverse, including small companion animals like dogs and cats as well as farm and food animals. Of the schools in the US (and yes there are a small number), different schools are known for different things. Exotics medicine is a growing area, but you are correct in your assumption that you will also have to learn to treat and care for many other species for most of the time in school. As for undergrad, you don't have to go to school for a particular degree. You can get any degree really, so long as you get the Vet School pre-requisite classes (which vary a bit from school to school) done during that degree. My undergraduate degree is in Animal Science (Large Animals mostly).
Anyhow, PM me if you have questions I might could help with. I could also direct you to another forum for Pre-Vet students that was helpful to me.